Home / 1,778.02-2,454.50-1,188.95

Finding the Fourth Proportional to 1,778.02, 2,454.50 and 1,188.95

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Solution

The fourth proportional to 1,778.02, 2,454.50 and 1,188.95 is: 1,641.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.02 : 2,454.50 = 1,188.95 : x
  2. Step 2: Convert to fraction form
    1,778.02/2,454.50 = 1,188.95/x
  3. Step 3: Cross multiply
    1,778.02x = 2,454.50 × 1,188.95
  4. Step 4: Simplify right side
    1,778.02x = 2,918,268.47
  5. Step 5: Solve for x
    x = 2,918,268.47/1,778.02
  6. Step 6: Final answer
    x = 1,641.30

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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.