Home / 5,240.16-7,231.08-2,881.80

Finding the Fourth Proportional to 5,240.16, 7,231.08 and 2,881.80

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Solution

The fourth proportional to 5,240.16, 7,231.08 and 2,881.80 is: 3,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.16 : 7,231.08 = 2,881.80 : x
  2. Step 2: Convert to fraction form
    5,240.16/7,231.08 = 2,881.80/x
  3. Step 3: Cross multiply
    5,240.16x = 7,231.08 × 2,881.80
  4. Step 4: Simplify right side
    5,240.16x = 20,838,526.34
  5. Step 5: Solve for x
    x = 20,838,526.34/5,240.16
  6. Step 6: Final answer
    x = 3,976.70

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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.