Home / 1,878.18-2,591.07-1,131.70

Finding the Fourth Proportional to 1,878.18, 2,591.07 and 1,131.70

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Solution

The fourth proportional to 1,878.18, 2,591.07 and 1,131.70 is: 1,561.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,878.18 : 2,591.07 = 1,131.70 : x
  2. Step 2: Convert to fraction form
    1,878.18/2,591.07 = 1,131.70/x
  3. Step 3: Cross multiply
    1,878.18x = 2,591.07 × 1,131.70
  4. Step 4: Simplify right side
    1,878.18x = 2,932,313.92
  5. Step 5: Solve for x
    x = 2,932,313.92/1,878.18
  6. Step 6: Final answer
    x = 1,561.25

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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.