Home / 1,447.35-2,171.10-707.64

Finding the Fourth Proportional to 1,447.35, 2,171.10 and 707.64

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Solution

The fourth proportional to 1,447.35, 2,171.10 and 707.64 is: 1,061.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,447.35 : 2,171.10 = 707.64 : x
  2. Step 2: Convert to fraction form
    1,447.35/2,171.10 = 707.64/x
  3. Step 3: Cross multiply
    1,447.35x = 2,171.10 × 707.64
  4. Step 4: Simplify right side
    1,447.35x = 1,536,357.20
  5. Step 5: Solve for x
    x = 1,536,357.20/1,447.35
  6. Step 6: Final answer
    x = 1,061.50

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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.