Home / 1,520.55-2,106.78-1,487.73

Finding the Fourth Proportional to 1,520.55, 2,106.78 and 1,487.73

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Solution

The fourth proportional to 1,520.55, 2,106.78 and 1,487.73 is: 2,061.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,520.55 : 2,106.78 = 1,487.73 : x
  2. Step 2: Convert to fraction form
    1,520.55/2,106.78 = 1,487.73/x
  3. Step 3: Cross multiply
    1,520.55x = 2,106.78 × 1,487.73
  4. Step 4: Simplify right side
    1,520.55x = 3,134,319.81
  5. Step 5: Solve for x
    x = 3,134,319.81/1,520.55
  6. Step 6: Final answer
    x = 2,061.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.