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Finding the Fourth Proportional to 9,702.99, 13,390.20 and 6,343.79

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Solution

The fourth proportional to 9,702.99, 13,390.20 and 6,343.79 is: 8,754.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,702.99 : 13,390.20 = 6,343.79 : x
  2. Step 2: Convert to fraction form
    9,702.99/13,390.20 = 6,343.79/x
  3. Step 3: Cross multiply
    9,702.99x = 13,390.20 × 6,343.79
  4. Step 4: Simplify right side
    9,702.99x = 84,944,549.91
  5. Step 5: Solve for x
    x = 84,944,549.91/9,702.99
  6. Step 6: Final answer
    x = 8,754.47

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1.5x scale

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.