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Finding the Fourth Proportional to 6,875.95, 9,479.12 and 4,885.78

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Solution

The fourth proportional to 6,875.95, 9,479.12 and 4,885.78 is: 6,735.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,875.95 : 9,479.12 = 4,885.78 : x
  2. Step 2: Convert to fraction form
    6,875.95/9,479.12 = 4,885.78/x
  3. Step 3: Cross multiply
    6,875.95x = 9,479.12 × 4,885.78
  4. Step 4: Simplify right side
    6,875.95x = 46,312,906.40
  5. Step 5: Solve for x
    x = 46,312,906.40/6,875.95
  6. Step 6: Final answer
    x = 6,735.49

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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.