Home / 1,247.16-1,719.90-1,114.20

Finding the Fourth Proportional to 1,247.16, 1,719.90 and 1,114.20

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Solution

The fourth proportional to 1,247.16, 1,719.90 and 1,114.20 is: 1,536.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,247.16 : 1,719.90 = 1,114.20 : x
  2. Step 2: Convert to fraction form
    1,247.16/1,719.90 = 1,114.20/x
  3. Step 3: Cross multiply
    1,247.16x = 1,719.90 × 1,114.20
  4. Step 4: Simplify right side
    1,247.16x = 1,916,312.58
  5. Step 5: Solve for x
    x = 1,916,312.58/1,247.16
  6. Step 6: Final answer
    x = 1,536.54

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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.