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Finding the Fourth Proportional to 5,275.98, 7,280.85 and 2,918.10

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Solution

The fourth proportional to 5,275.98, 7,280.85 and 2,918.10 is: 4,026.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,275.98 : 7,280.85 = 2,918.10 : x
  2. Step 2: Convert to fraction form
    5,275.98/7,280.85 = 2,918.10/x
  3. Step 3: Cross multiply
    5,275.98x = 7,280.85 × 2,918.10
  4. Step 4: Simplify right side
    5,275.98x = 21,246,248.39
  5. Step 5: Solve for x
    x = 21,246,248.39/5,275.98
  6. Step 6: Final answer
    x = 4,026.98

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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.