Home / 7,474.78-10,315.15-4,117.53

Finding the Fourth Proportional to 7,474.78, 10,315.15 and 4,117.53

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Solution

The fourth proportional to 7,474.78, 10,315.15 and 4,117.53 is: 5,682.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,474.78 : 10,315.15 = 4,117.53 : x
  2. Step 2: Convert to fraction form
    7,474.78/10,315.15 = 4,117.53/x
  3. Step 3: Cross multiply
    7,474.78x = 10,315.15 × 4,117.53
  4. Step 4: Simplify right side
    7,474.78x = 42,472,967.97
  5. Step 5: Solve for x
    x = 42,472,967.97/7,474.78
  6. Step 6: Final answer
    x = 5,682.17

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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.