Home / 1,210.74-1,671.57-1,086.18

Finding the Fourth Proportional to 1,210.74, 1,671.57 and 1,086.18

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Solution

The fourth proportional to 1,210.74, 1,671.57 and 1,086.18 is: 1,499.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210.74 : 1,671.57 = 1,086.18 : x
  2. Step 2: Convert to fraction form
    1,210.74/1,671.57 = 1,086.18/x
  3. Step 3: Cross multiply
    1,210.74x = 1,671.57 × 1,086.18
  4. Step 4: Simplify right side
    1,210.74x = 1,815,625.90
  5. Step 5: Solve for x
    x = 1,815,625.90/1,210.74
  6. Step 6: Final answer
    x = 1,499.60

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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.