Home / 1,487.15-2,052.31-824.08

Finding the Fourth Proportional to 1,487.15, 2,052.31 and 824.08

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Solution

The fourth proportional to 1,487.15, 2,052.31 and 824.08 is: 1,137.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,487.15 : 2,052.31 = 824.08 : x
  2. Step 2: Convert to fraction form
    1,487.15/2,052.31 = 824.08/x
  3. Step 3: Cross multiply
    1,487.15x = 2,052.31 × 824.08
  4. Step 4: Simplify right side
    1,487.15x = 1,691,255.30
  5. Step 5: Solve for x
    x = 1,691,255.30/1,487.15
  6. Step 6: Final answer
    x = 1,137.25

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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.