Home / 1,081.19-1,492.07-615.44

Finding the Fourth Proportional to 1,081.19, 1,492.07 and 615.44

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Solution

The fourth proportional to 1,081.19, 1,492.07 and 615.44 is: 849.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,081.19 : 1,492.07 = 615.44 : x
  2. Step 2: Convert to fraction form
    1,081.19/1,492.07 = 615.44/x
  3. Step 3: Cross multiply
    1,081.19x = 1,492.07 × 615.44
  4. Step 4: Simplify right side
    1,081.19x = 918,280.21
  5. Step 5: Solve for x
    x = 918,280.21/1,081.19
  6. Step 6: Final answer
    x = 849.32

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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.