Home / 5,159.28-7,119.02-2,920.70

Finding the Fourth Proportional to 5,159.28, 7,119.02 and 2,920.70

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Solution

The fourth proportional to 5,159.28, 7,119.02 and 2,920.70 is: 4,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,159.28 : 7,119.02 = 2,920.70 : x
  2. Step 2: Convert to fraction form
    5,159.28/7,119.02 = 2,920.70/x
  3. Step 3: Cross multiply
    5,159.28x = 7,119.02 × 2,920.70
  4. Step 4: Simplify right side
    5,159.28x = 20,792,521.71
  5. Step 5: Solve for x
    x = 20,792,521.71/5,159.28
  6. Step 6: Final answer
    x = 4,030.12

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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.