Home / 5,117.12-7,061.12-2,878.95

Finding the Fourth Proportional to 5,117.12, 7,061.12 and 2,878.95

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Solution

The fourth proportional to 5,117.12, 7,061.12 and 2,878.95 is: 3,972.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.12 : 7,061.12 = 2,878.95 : x
  2. Step 2: Convert to fraction form
    5,117.12/7,061.12 = 2,878.95/x
  3. Step 3: Cross multiply
    5,117.12x = 7,061.12 × 2,878.95
  4. Step 4: Simplify right side
    5,117.12x = 20,328,586.74
  5. Step 5: Solve for x
    x = 20,328,586.74/5,117.12
  6. Step 6: Final answer
    x = 3,972.66

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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.