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Finding the Fourth Proportional to 6,875.88, 9,490.87 and 4,391.88

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Solution

The fourth proportional to 6,875.88, 9,490.87 and 4,391.88 is: 6,062.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,875.88 : 9,490.87 = 4,391.88 : x
  2. Step 2: Convert to fraction form
    6,875.88/9,490.87 = 4,391.88/x
  3. Step 3: Cross multiply
    6,875.88x = 9,490.87 × 4,391.88
  4. Step 4: Simplify right side
    6,875.88x = 41,682,762.14
  5. Step 5: Solve for x
    x = 41,682,762.14/6,875.88
  6. Step 6: Final answer
    x = 6,062.17

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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.