Home / 1,251.96-1,724.40-1,127.28

Finding the Fourth Proportional to 1,251.96, 1,724.40 and 1,127.28

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Solution

The fourth proportional to 1,251.96, 1,724.40 and 1,127.28 is: 1,552.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,251.96 : 1,724.40 = 1,127.28 : x
  2. Step 2: Convert to fraction form
    1,251.96/1,724.40 = 1,127.28/x
  3. Step 3: Cross multiply
    1,251.96x = 1,724.40 × 1,127.28
  4. Step 4: Simplify right side
    1,251.96x = 1,943,881.63
  5. Step 5: Solve for x
    x = 1,943,881.63/1,251.96
  6. Step 6: Final answer
    x = 1,552.67

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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.