Home / 5,280.40-7,917.65-2,162.58

Finding the Fourth Proportional to 5,280.40, 7,917.65 and 2,162.58

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Solution

The fourth proportional to 5,280.40, 7,917.65 and 2,162.58 is: 3,242.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.40 : 7,917.65 = 2,162.58 : x
  2. Step 2: Convert to fraction form
    5,280.40/7,917.65 = 2,162.58/x
  3. Step 3: Cross multiply
    5,280.40x = 7,917.65 × 2,162.58
  4. Step 4: Simplify right side
    5,280.40x = 17,122,551.54
  5. Step 5: Solve for x
    x = 17,122,551.54/5,280.40
  6. Step 6: Final answer
    x = 3,242.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.