Home / 5,417.52-7,478.28-3,998.76

Finding the Fourth Proportional to 5,417.52, 7,478.28 and 3,998.76

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Solution

The fourth proportional to 5,417.52, 7,478.28 and 3,998.76 is: 5,519.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,417.52 : 7,478.28 = 3,998.76 : x
  2. Step 2: Convert to fraction form
    5,417.52/7,478.28 = 3,998.76/x
  3. Step 3: Cross multiply
    5,417.52x = 7,478.28 × 3,998.76
  4. Step 4: Simplify right side
    5,417.52x = 29,903,846.93
  5. Step 5: Solve for x
    x = 29,903,846.93/5,417.52
  6. Step 6: Final answer
    x = 5,519.84

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Find fourth proportional to 2,708.76, 3,739.14 and 1,999.38
Half scale
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Double 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.