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Finding the Fourth Proportional to 1,886.48, 2,830.22 and 776.24

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Solution

The fourth proportional to 1,886.48, 2,830.22 and 776.24 is: 1,164.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.48 : 2,830.22 = 776.24 : x
  2. Step 2: Convert to fraction form
    1,886.48/2,830.22 = 776.24/x
  3. Step 3: Cross multiply
    1,886.48x = 2,830.22 × 776.24
  4. Step 4: Simplify right side
    1,886.48x = 2,196,929.97
  5. Step 5: Solve for x
    x = 2,196,929.97/1,886.48
  6. Step 6: Final answer
    x = 1,164.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.