Home / 5,312.91-7,959.36-3,115.11

Finding the Fourth Proportional to 5,312.91, 7,959.36 and 3,115.11

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Solution

The fourth proportional to 5,312.91, 7,959.36 and 3,115.11 is: 4,666.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.91 : 7,959.36 = 3,115.11 : x
  2. Step 2: Convert to fraction form
    5,312.91/7,959.36 = 3,115.11/x
  3. Step 3: Cross multiply
    5,312.91x = 7,959.36 × 3,115.11
  4. Step 4: Simplify right side
    5,312.91x = 24,794,281.93
  5. Step 5: Solve for x
    x = 24,794,281.93/5,312.91
  6. Step 6: Final answer
    x = 4,666.80

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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.