Home / 4,079.61-5,630.77-2,312.19

Finding the Fourth Proportional to 4,079.61, 5,630.77 and 2,312.19

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Solution

The fourth proportional to 4,079.61, 5,630.77 and 2,312.19 is: 3,191.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,079.61 : 5,630.77 = 2,312.19 : x
  2. Step 2: Convert to fraction form
    4,079.61/5,630.77 = 2,312.19/x
  3. Step 3: Cross multiply
    4,079.61x = 5,630.77 × 2,312.19
  4. Step 4: Simplify right side
    4,079.61x = 13,019,398.53
  5. Step 5: Solve for x
    x = 13,019,398.53/4,079.61
  6. Step 6: Final answer
    x = 3,191.33

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Half scale
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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.