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Finding the Fourth Proportional to 1,802.64, 2,487.84 and 1,691.40

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Solution

The fourth proportional to 1,802.64, 2,487.84 and 1,691.40 is: 2,334.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,802.64 : 2,487.84 = 1,691.40 : x
  2. Step 2: Convert to fraction form
    1,802.64/2,487.84 = 1,691.40/x
  3. Step 3: Cross multiply
    1,802.64x = 2,487.84 × 1,691.40
  4. Step 4: Simplify right side
    1,802.64x = 4,207,932.58
  5. Step 5: Solve for x
    x = 4,207,932.58/1,802.64
  6. Step 6: Final answer
    x = 2,334.32

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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.