Home / 5,275.42-7,280.49-2,917.78

Finding the Fourth Proportional to 5,275.42, 7,280.49 and 2,917.78

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Solution

The fourth proportional to 5,275.42, 7,280.49 and 2,917.78 is: 4,026.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.42 : 7,280.49 = 2,917.78 : x
  2. Step 2: Convert to fraction form
    5,275.42/7,280.49 = 2,917.78/x
  3. Step 3: Cross multiply
    5,275.42x = 7,280.49 × 2,917.78
  4. Step 4: Simplify right side
    5,275.42x = 21,242,868.11
  5. Step 5: Solve for x
    x = 21,242,868.11/5,275.42
  6. Step 6: Final answer
    x = 4,026.76

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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.