Home / 5,115.63-7,060.85-3,125.86

Finding the Fourth Proportional to 5,115.63, 7,060.85 and 3,125.86

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Solution

The fourth proportional to 5,115.63, 7,060.85 and 3,125.86 is: 4,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.63 : 7,060.85 = 3,125.86 : x
  2. Step 2: Convert to fraction form
    5,115.63/7,060.85 = 3,125.86/x
  3. Step 3: Cross multiply
    5,115.63x = 7,060.85 × 3,125.86
  4. Step 4: Simplify right side
    5,115.63x = 22,071,228.58
  5. Step 5: Solve for x
    x = 22,071,228.58/5,115.63
  6. Step 6: Final answer
    x = 4,314.47

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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.