Home / 1,161.12-1,603.62-1,088.76

Finding the Fourth Proportional to 1,161.12, 1,603.62 and 1,088.76

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Solution

The fourth proportional to 1,161.12, 1,603.62 and 1,088.76 is: 1,503.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,161.12 : 1,603.62 = 1,088.76 : x
  2. Step 2: Convert to fraction form
    1,161.12/1,603.62 = 1,088.76/x
  3. Step 3: Cross multiply
    1,161.12x = 1,603.62 × 1,088.76
  4. Step 4: Simplify right side
    1,161.12x = 1,745,957.31
  5. Step 5: Solve for x
    x = 1,745,957.31/1,161.12
  6. Step 6: Final answer
    x = 1,503.68

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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.