Home / 1,816.85-2,506.52-1,187.18

Finding the Fourth Proportional to 1,816.85, 2,506.52 and 1,187.18

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Solution

The fourth proportional to 1,816.85, 2,506.52 and 1,187.18 is: 1,637.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.85 : 2,506.52 = 1,187.18 : x
  2. Step 2: Convert to fraction form
    1,816.85/2,506.52 = 1,187.18/x
  3. Step 3: Cross multiply
    1,816.85x = 2,506.52 × 1,187.18
  4. Step 4: Simplify right side
    1,816.85x = 2,975,671.95
  5. Step 5: Solve for x
    x = 2,975,671.95/1,816.85
  6. Step 6: Final answer
    x = 1,637.82

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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.