Home / 1,156.44-1,720.85-1,116.76

Finding the Fourth Proportional to 1,156.44, 1,720.85 and 1,116.76

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Solution

The fourth proportional to 1,156.44, 1,720.85 and 1,116.76 is: 1,661.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,156.44 : 1,720.85 = 1,116.76 : x
  2. Step 2: Convert to fraction form
    1,156.44/1,720.85 = 1,116.76/x
  3. Step 3: Cross multiply
    1,156.44x = 1,720.85 × 1,116.76
  4. Step 4: Simplify right side
    1,156.44x = 1,921,776.45
  5. Step 5: Solve for x
    x = 1,921,776.45/1,156.44
  6. Step 6: Final answer
    x = 1,661.80

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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.