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Finding the Fourth Proportional to 1,681.32, 2,523.54 and 860.16

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Solution

The fourth proportional to 1,681.32, 2,523.54 and 860.16 is: 1,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.32 : 2,523.54 = 860.16 : x
  2. Step 2: Convert to fraction form
    1,681.32/2,523.54 = 860.16/x
  3. Step 3: Cross multiply
    1,681.32x = 2,523.54 × 860.16
  4. Step 4: Simplify right side
    1,681.32x = 2,170,648.17
  5. Step 5: Solve for x
    x = 2,170,648.17/1,681.32
  6. Step 6: Final answer
    x = 1,291.04

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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.