Home / 3,681.12-5,079.60-2,503.20

Finding the Fourth Proportional to 3,681.12, 5,079.60 and 2,503.20

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Solution

The fourth proportional to 3,681.12, 5,079.60 and 2,503.20 is: 3,454.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.12 : 5,079.60 = 2,503.20 : x
  2. Step 2: Convert to fraction form
    3,681.12/5,079.60 = 2,503.20/x
  3. Step 3: Cross multiply
    3,681.12x = 5,079.60 × 2,503.20
  4. Step 4: Simplify right side
    3,681.12x = 12,715,254.72
  5. Step 5: Solve for x
    x = 12,715,254.72/3,681.12
  6. Step 6: Final answer
    x = 3,454.18

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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.