Home / 5,419.60-7,478.40-3,061.68

Finding the Fourth Proportional to 5,419.60, 7,478.40 and 3,061.68

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Solution

The fourth proportional to 5,419.60, 7,478.40 and 3,061.68 is: 4,224.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,419.60 : 7,478.40 = 3,061.68 : x
  2. Step 2: Convert to fraction form
    5,419.60/7,478.40 = 3,061.68/x
  3. Step 3: Cross multiply
    5,419.60x = 7,478.40 × 3,061.68
  4. Step 4: Simplify right side
    5,419.60x = 22,896,467.71
  5. Step 5: Solve for x
    x = 22,896,467.71/5,419.60
  6. Step 6: Final answer
    x = 4,224.75

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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.