Home / 5,117.07-7,061.49-2,878.95

Finding the Fourth Proportional to 5,117.07, 7,061.49 and 2,878.95

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Solution

The fourth proportional to 5,117.07, 7,061.49 and 2,878.95 is: 3,972.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,117.07 : 7,061.49 = 2,878.95 : x
  2. Step 2: Convert to fraction form
    5,117.07/7,061.49 = 2,878.95/x
  3. Step 3: Cross multiply
    5,117.07x = 7,061.49 × 2,878.95
  4. Step 4: Simplify right side
    5,117.07x = 20,329,676.64
  5. Step 5: Solve for x
    x = 20,329,676.64/5,117.07
  6. Step 6: Final answer
    x = 3,972.91

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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.