Home / 8,686.85-11,983.29-5,330.39

Finding the Fourth Proportional to 8,686.85, 11,983.29 and 5,330.39

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Solution

The fourth proportional to 8,686.85, 11,983.29 and 5,330.39 is: 7,353.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.85 : 11,983.29 = 5,330.39 : x
  2. Step 2: Convert to fraction form
    8,686.85/11,983.29 = 5,330.39/x
  3. Step 3: Cross multiply
    8,686.85x = 11,983.29 × 5,330.39
  4. Step 4: Simplify right side
    8,686.85x = 63,875,609.18
  5. Step 5: Solve for x
    x = 63,875,609.18/8,686.85
  6. Step 6: Final answer
    x = 7,353.14

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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.