Home / 7,115.85-9,818.42-5,434.29

Finding the Fourth Proportional to 7,115.85, 9,818.42 and 5,434.29

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Solution

The fourth proportional to 7,115.85, 9,818.42 and 5,434.29 is: 7,498.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.85 : 9,818.42 = 5,434.29 : x
  2. Step 2: Convert to fraction form
    7,115.85/9,818.42 = 5,434.29/x
  3. Step 3: Cross multiply
    7,115.85x = 9,818.42 × 5,434.29
  4. Step 4: Simplify right side
    7,115.85x = 53,356,114.45
  5. Step 5: Solve for x
    x = 53,356,114.45/7,115.85
  6. Step 6: Final answer
    x = 7,498.21

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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.