Home / 1,316.06-1,818.57-1,126.97

Finding the Fourth Proportional to 1,316.06, 1,818.57 and 1,126.97

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Solution

The fourth proportional to 1,316.06, 1,818.57 and 1,126.97 is: 1,557.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.06 : 1,818.57 = 1,126.97 : x
  2. Step 2: Convert to fraction form
    1,316.06/1,818.57 = 1,126.97/x
  3. Step 3: Cross multiply
    1,316.06x = 1,818.57 × 1,126.97
  4. Step 4: Simplify right side
    1,316.06x = 2,049,473.83
  5. Step 5: Solve for x
    x = 2,049,473.83/1,316.06
  6. Step 6: Final answer
    x = 1,557.28

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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.