Home / 2,947.59-4,070.87-1,831.20

Finding the Fourth Proportional to 2,947.59, 4,070.87 and 1,831.20

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Solution

The fourth proportional to 2,947.59, 4,070.87 and 1,831.20 is: 2,529.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.59 : 4,070.87 = 1,831.20 : x
  2. Step 2: Convert to fraction form
    2,947.59/4,070.87 = 1,831.20/x
  3. Step 3: Cross multiply
    2,947.59x = 4,070.87 × 1,831.20
  4. Step 4: Simplify right side
    2,947.59x = 7,454,567.99
  5. Step 5: Solve for x
    x = 7,454,567.99/2,947.59
  6. Step 6: Final answer
    x = 2,529.04

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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.