Home / 8,301.04-12,390.84-7,316.90

Finding the Fourth Proportional to 8,301.04, 12,390.84 and 7,316.90

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Solution

The fourth proportional to 8,301.04, 12,390.84 and 7,316.90 is: 10,921.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,301.04 : 12,390.84 = 7,316.90 : x
  2. Step 2: Convert to fraction form
    8,301.04/12,390.84 = 7,316.90/x
  3. Step 3: Cross multiply
    8,301.04x = 12,390.84 × 7,316.90
  4. Step 4: Simplify right side
    8,301.04x = 90,662,537.20
  5. Step 5: Solve for x
    x = 90,662,537.20/8,301.04
  6. Step 6: Final answer
    x = 10,921.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.