Home / 1,727.55-2,384.15-981.54

Finding the Fourth Proportional to 1,727.55, 2,384.15 and 981.54

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Solution

The fourth proportional to 1,727.55, 2,384.15 and 981.54 is: 1,354.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,727.55 : 2,384.15 = 981.54 : x
  2. Step 2: Convert to fraction form
    1,727.55/2,384.15 = 981.54/x
  3. Step 3: Cross multiply
    1,727.55x = 2,384.15 × 981.54
  4. Step 4: Simplify right side
    1,727.55x = 2,340,133.68
  5. Step 5: Solve for x
    x = 2,340,133.68/1,727.55
  6. Step 6: Final answer
    x = 1,354.60

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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.