Home / 8,606.40-12,897.45-5,309.70

Finding the Fourth Proportional to 8,606.40, 12,897.45 and 5,309.70

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Solution

The fourth proportional to 8,606.40, 12,897.45 and 5,309.70 is: 7,957.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.40 : 12,897.45 = 5,309.70 : x
  2. Step 2: Convert to fraction form
    8,606.40/12,897.45 = 5,309.70/x
  3. Step 3: Cross multiply
    8,606.40x = 12,897.45 × 5,309.70
  4. Step 4: Simplify right side
    8,606.40x = 68,481,590.27
  5. Step 5: Solve for x
    x = 68,481,590.27/8,606.40
  6. Step 6: Final answer
    x = 7,957.05

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1.5x scale

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.