Home / 9,379.60-12,943.88-5,130.72

Finding the Fourth Proportional to 9,379.60, 12,943.88 and 5,130.72

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Solution

The fourth proportional to 9,379.60, 12,943.88 and 5,130.72 is: 7,080.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.60 : 12,943.88 = 5,130.72 : x
  2. Step 2: Convert to fraction form
    9,379.60/12,943.88 = 5,130.72/x
  3. Step 3: Cross multiply
    9,379.60x = 12,943.88 × 5,130.72
  4. Step 4: Simplify right side
    9,379.60x = 66,411,423.99
  5. Step 5: Solve for x
    x = 66,411,423.99/9,379.60
  6. Step 6: Final answer
    x = 7,080.41

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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.