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Finding the Fourth Proportional to 2,535.71, 3,803.36 and 686.88

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Solution

The fourth proportional to 2,535.71, 3,803.36 and 686.88 is: 1,030.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,535.71 : 3,803.36 = 686.88 : x
  2. Step 2: Convert to fraction form
    2,535.71/3,803.36 = 686.88/x
  3. Step 3: Cross multiply
    2,535.71x = 3,803.36 × 686.88
  4. Step 4: Simplify right side
    2,535.71x = 2,612,448.48
  5. Step 5: Solve for x
    x = 2,612,448.48/2,535.71
  6. Step 6: Final answer
    x = 1,030.27

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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.