Home / 1,688.83-2,530.20-1,587.17

Finding the Fourth Proportional to 1,688.83, 2,530.20 and 1,587.17

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Solution

The fourth proportional to 1,688.83, 2,530.20 and 1,587.17 is: 2,377.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.83 : 2,530.20 = 1,587.17 : x
  2. Step 2: Convert to fraction form
    1,688.83/2,530.20 = 1,587.17/x
  3. Step 3: Cross multiply
    1,688.83x = 2,530.20 × 1,587.17
  4. Step 4: Simplify right side
    1,688.83x = 4,015,857.53
  5. Step 5: Solve for x
    x = 4,015,857.53/1,688.83
  6. Step 6: Final answer
    x = 2,377.89

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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.