Home / 1,821.90-2,514.14-1,114.92

Finding the Fourth Proportional to 1,821.90, 2,514.14 and 1,114.92

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Solution

The fourth proportional to 1,821.90, 2,514.14 and 1,114.92 is: 1,538.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821.90 : 2,514.14 = 1,114.92 : x
  2. Step 2: Convert to fraction form
    1,821.90/2,514.14 = 1,114.92/x
  3. Step 3: Cross multiply
    1,821.90x = 2,514.14 × 1,114.92
  4. Step 4: Simplify right side
    1,821.90x = 2,803,064.97
  5. Step 5: Solve for x
    x = 2,803,064.97/1,821.90
  6. Step 6: Final answer
    x = 1,538.54

Related Problems

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Half scale
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Double scale
Find fourth proportional to 1,822.90, 2,515.52 and 1,115.92
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.