Home / 7,379.12-11,070.29-5,425.40

Finding the Fourth Proportional to 7,379.12, 11,070.29 and 5,425.40

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Solution

The fourth proportional to 7,379.12, 11,070.29 and 5,425.40 is: 8,139.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,379.12 : 11,070.29 = 5,425.40 : x
  2. Step 2: Convert to fraction form
    7,379.12/11,070.29 = 5,425.40/x
  3. Step 3: Cross multiply
    7,379.12x = 11,070.29 × 5,425.40
  4. Step 4: Simplify right side
    7,379.12x = 60,060,668.89
  5. Step 5: Solve for x
    x = 60,060,668.89/7,379.12
  6. Step 6: Final answer
    x = 8,139.28

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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.