Home / 2,726.04-4,088.76-778.20

Finding the Fourth Proportional to 2,726.04, 4,088.76 and 778.20

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Solution

The fourth proportional to 2,726.04, 4,088.76 and 778.20 is: 1,167.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,726.04 : 4,088.76 = 778.20 : x
  2. Step 2: Convert to fraction form
    2,726.04/4,088.76 = 778.20/x
  3. Step 3: Cross multiply
    2,726.04x = 4,088.76 × 778.20
  4. Step 4: Simplify right side
    2,726.04x = 3,181,873.03
  5. Step 5: Solve for x
    x = 3,181,873.03/2,726.04
  6. Step 6: Final answer
    x = 1,167.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.