Home / 1,132.84-1,689.53-1,113.40

Finding the Fourth Proportional to 1,132.84, 1,689.53 and 1,113.40

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Solution

The fourth proportional to 1,132.84, 1,689.53 and 1,113.40 is: 1,660.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.84 : 1,689.53 = 1,113.40 : x
  2. Step 2: Convert to fraction form
    1,132.84/1,689.53 = 1,113.40/x
  3. Step 3: Cross multiply
    1,132.84x = 1,689.53 × 1,113.40
  4. Step 4: Simplify right side
    1,132.84x = 1,881,122.70
  5. Step 5: Solve for x
    x = 1,881,122.70/1,132.84
  6. Step 6: Final answer
    x = 1,660.54

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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.