Home / 2,127.30-3,191.01-740.70

Finding the Fourth Proportional to 2,127.30, 3,191.01 and 740.70

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Solution

The fourth proportional to 2,127.30, 3,191.01 and 740.70 is: 1,111.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.30 : 3,191.01 = 740.70 : x
  2. Step 2: Convert to fraction form
    2,127.30/3,191.01 = 740.70/x
  3. Step 3: Cross multiply
    2,127.30x = 3,191.01 × 740.70
  4. Step 4: Simplify right side
    2,127.30x = 2,363,581.11
  5. Step 5: Solve for x
    x = 2,363,581.11/2,127.30
  6. Step 6: Final answer
    x = 1,111.07

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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.