Home / 2,959.35-4,085.07-1,780.19

Finding the Fourth Proportional to 2,959.35, 4,085.07 and 1,780.19

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Solution

The fourth proportional to 2,959.35, 4,085.07 and 1,780.19 is: 2,457.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,959.35 : 4,085.07 = 1,780.19 : x
  2. Step 2: Convert to fraction form
    2,959.35/4,085.07 = 1,780.19/x
  3. Step 3: Cross multiply
    2,959.35x = 4,085.07 × 1,780.19
  4. Step 4: Simplify right side
    2,959.35x = 7,272,191.86
  5. Step 5: Solve for x
    x = 7,272,191.86/2,959.35
  6. Step 6: Final answer
    x = 2,457.37

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Half scale
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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.