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Finding the Fourth Proportional to 5,292.48, 7,935.12 and 2,690.40

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Solution

The fourth proportional to 5,292.48, 7,935.12 and 2,690.40 is: 4,033.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,292.48 : 7,935.12 = 2,690.40 : x
  2. Step 2: Convert to fraction form
    5,292.48/7,935.12 = 2,690.40/x
  3. Step 3: Cross multiply
    5,292.48x = 7,935.12 × 2,690.40
  4. Step 4: Simplify right side
    5,292.48x = 21,348,646.85
  5. Step 5: Solve for x
    x = 21,348,646.85/5,292.48
  6. Step 6: Final answer
    x = 4,033.77

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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.