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Finding the Fourth Proportional to 8,358.48, 11,530.62 and 7,031.70

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Solution

The fourth proportional to 8,358.48, 11,530.62 and 7,031.70 is: 9,700.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,358.48 : 11,530.62 = 7,031.70 : x
  2. Step 2: Convert to fraction form
    8,358.48/11,530.62 = 7,031.70/x
  3. Step 3: Cross multiply
    8,358.48x = 11,530.62 × 7,031.70
  4. Step 4: Simplify right side
    8,358.48x = 81,079,860.65
  5. Step 5: Solve for x
    x = 81,079,860.65/8,358.48
  6. Step 6: Final answer
    x = 9,700.31

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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.