Home / 1,520.56-2,279.68-1,259.76

Finding the Fourth Proportional to 1,520.56, 2,279.68 and 1,259.76

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Solution

The fourth proportional to 1,520.56, 2,279.68 and 1,259.76 is: 1,888.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.56 : 2,279.68 = 1,259.76 : x
  2. Step 2: Convert to fraction form
    1,520.56/2,279.68 = 1,259.76/x
  3. Step 3: Cross multiply
    1,520.56x = 2,279.68 × 1,259.76
  4. Step 4: Simplify right side
    1,520.56x = 2,871,849.68
  5. Step 5: Solve for x
    x = 2,871,849.68/1,520.56
  6. Step 6: Final answer
    x = 1,888.68

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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.