Home / 7,141.50-10,712.39-1,947.51

Finding the Fourth Proportional to 7,141.50, 10,712.39 and 1,947.51

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Solution

The fourth proportional to 7,141.50, 10,712.39 and 1,947.51 is: 2,921.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.50 : 10,712.39 = 1,947.51 : x
  2. Step 2: Convert to fraction form
    7,141.50/10,712.39 = 1,947.51/x
  3. Step 3: Cross multiply
    7,141.50x = 10,712.39 × 1,947.51
  4. Step 4: Simplify right side
    7,141.50x = 20,862,476.91
  5. Step 5: Solve for x
    x = 20,862,476.91/7,141.50
  6. Step 6: Final answer
    x = 2,921.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.