Home / 5,275.76-7,280.55-2,917.90

Finding the Fourth Proportional to 5,275.76, 7,280.55 and 2,917.90

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Solution

The fourth proportional to 5,275.76, 7,280.55 and 2,917.90 is: 4,026.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.76 : 7,280.55 = 2,917.90 : x
  2. Step 2: Convert to fraction form
    5,275.76/7,280.55 = 2,917.90/x
  3. Step 3: Cross multiply
    5,275.76x = 7,280.55 × 2,917.90
  4. Step 4: Simplify right side
    5,275.76x = 21,243,905.47
  5. Step 5: Solve for x
    x = 21,243,905.47/5,275.76
  6. Step 6: Final answer
    x = 4,026.70

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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.