Home / 1,187.54-1,635.08-1,010.16

Finding the Fourth Proportional to 1,187.54, 1,635.08 and 1,010.16

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Solution

The fourth proportional to 1,187.54, 1,635.08 and 1,010.16 is: 1,390.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,187.54 : 1,635.08 = 1,010.16 : x
  2. Step 2: Convert to fraction form
    1,187.54/1,635.08 = 1,010.16/x
  3. Step 3: Cross multiply
    1,187.54x = 1,635.08 × 1,010.16
  4. Step 4: Simplify right side
    1,187.54x = 1,651,692.41
  5. Step 5: Solve for x
    x = 1,651,692.41/1,187.54
  6. Step 6: Final answer
    x = 1,390.85

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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.