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Finding the Fourth Proportional to 2,535.32, 3,802.68 and 686.32

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Solution

The fourth proportional to 2,535.32, 3,802.68 and 686.32 is: 1,029.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,535.32 : 3,802.68 = 686.32 : x
  2. Step 2: Convert to fraction form
    2,535.32/3,802.68 = 686.32/x
  3. Step 3: Cross multiply
    2,535.32x = 3,802.68 × 686.32
  4. Step 4: Simplify right side
    2,535.32x = 2,609,855.34
  5. Step 5: Solve for x
    x = 2,609,855.34/2,535.32
  6. Step 6: Final answer
    x = 1,029.40

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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.