Home / 1,246.28-1,715.57-1,078.16

Finding the Fourth Proportional to 1,246.28, 1,715.57 and 1,078.16

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Solution

The fourth proportional to 1,246.28, 1,715.57 and 1,078.16 is: 1,484.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.28 : 1,715.57 = 1,078.16 : x
  2. Step 2: Convert to fraction form
    1,246.28/1,715.57 = 1,078.16/x
  3. Step 3: Cross multiply
    1,246.28x = 1,715.57 × 1,078.16
  4. Step 4: Simplify right side
    1,246.28x = 1,849,658.95
  5. Step 5: Solve for x
    x = 1,849,658.95/1,246.28
  6. Step 6: Final answer
    x = 1,484.14

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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.