Home / 5,158.08-7,118.13-2,920.11

Finding the Fourth Proportional to 5,158.08, 7,118.13 and 2,920.11

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Solution

The fourth proportional to 5,158.08, 7,118.13 and 2,920.11 is: 4,029.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.08 : 7,118.13 = 2,920.11 : x
  2. Step 2: Convert to fraction form
    5,158.08/7,118.13 = 2,920.11/x
  3. Step 3: Cross multiply
    5,158.08x = 7,118.13 × 2,920.11
  4. Step 4: Simplify right side
    5,158.08x = 20,785,722.59
  5. Step 5: Solve for x
    x = 20,785,722.59/5,158.08
  6. Step 6: Final answer
    x = 4,029.74

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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.