Home / 9,379.47-12,943.97-5,130.76

Finding the Fourth Proportional to 9,379.47, 12,943.97 and 5,130.76

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Solution

The fourth proportional to 9,379.47, 12,943.97 and 5,130.76 is: 7,080.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.47 : 12,943.97 = 5,130.76 : x
  2. Step 2: Convert to fraction form
    9,379.47/12,943.97 = 5,130.76/x
  3. Step 3: Cross multiply
    9,379.47x = 12,943.97 × 5,130.76
  4. Step 4: Simplify right side
    9,379.47x = 66,412,403.52
  5. Step 5: Solve for x
    x = 66,412,403.52/9,379.47
  6. Step 6: Final answer
    x = 7,080.61

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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.