Home / 1,968.27-2,715.74-1,117.48

Finding the Fourth Proportional to 1,968.27, 2,715.74 and 1,117.48

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Solution

The fourth proportional to 1,968.27, 2,715.74 and 1,117.48 is: 1,541.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.27 : 2,715.74 = 1,117.48 : x
  2. Step 2: Convert to fraction form
    1,968.27/2,715.74 = 1,117.48/x
  3. Step 3: Cross multiply
    1,968.27x = 2,715.74 × 1,117.48
  4. Step 4: Simplify right side
    1,968.27x = 3,034,781.14
  5. Step 5: Solve for x
    x = 3,034,781.14/1,968.27
  6. Step 6: Final answer
    x = 1,541.85

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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.