Home / 1,153.98-1,719.66-1,122.30

Finding the Fourth Proportional to 1,153.98, 1,719.66 and 1,122.30

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Solution

The fourth proportional to 1,153.98, 1,719.66 and 1,122.30 is: 1,672.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,153.98 : 1,719.66 = 1,122.30 : x
  2. Step 2: Convert to fraction form
    1,153.98/1,719.66 = 1,122.30/x
  3. Step 3: Cross multiply
    1,153.98x = 1,719.66 × 1,122.30
  4. Step 4: Simplify right side
    1,153.98x = 1,929,974.42
  5. Step 5: Solve for x
    x = 1,929,974.42/1,153.98
  6. Step 6: Final answer
    x = 1,672.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.