Home / 2,154.68-2,974.09-1,270.76

Finding the Fourth Proportional to 2,154.68, 2,974.09 and 1,270.76

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Solution

The fourth proportional to 2,154.68, 2,974.09 and 1,270.76 is: 1,754.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.68 : 2,974.09 = 1,270.76 : x
  2. Step 2: Convert to fraction form
    2,154.68/2,974.09 = 1,270.76/x
  3. Step 3: Cross multiply
    2,154.68x = 2,974.09 × 1,270.76
  4. Step 4: Simplify right side
    2,154.68x = 3,779,354.61
  5. Step 5: Solve for x
    x = 3,779,354.61/2,154.68
  6. Step 6: Final answer
    x = 1,754.02

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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.