Home / 5,117.40-7,061.49-2,878.92

Finding the Fourth Proportional to 5,117.40, 7,061.49 and 2,878.92

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Solution

The fourth proportional to 5,117.40, 7,061.49 and 2,878.92 is: 3,972.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.40 : 7,061.49 = 2,878.92 : x
  2. Step 2: Convert to fraction form
    5,117.40/7,061.49 = 2,878.92/x
  3. Step 3: Cross multiply
    5,117.40x = 7,061.49 × 2,878.92
  4. Step 4: Simplify right side
    5,117.40x = 20,329,464.79
  5. Step 5: Solve for x
    x = 20,329,464.79/5,117.40
  6. Step 6: Final answer
    x = 3,972.62

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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.