Home / 1,778.15-2,451.47-1,246.32

Finding the Fourth Proportional to 1,778.15, 2,451.47 and 1,246.32

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Solution

The fourth proportional to 1,778.15, 2,451.47 and 1,246.32 is: 1,718.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,778.15 : 2,451.47 = 1,246.32 : x
  2. Step 2: Convert to fraction form
    1,778.15/2,451.47 = 1,246.32/x
  3. Step 3: Cross multiply
    1,778.15x = 2,451.47 × 1,246.32
  4. Step 4: Simplify right side
    1,778.15x = 3,055,309.86
  5. Step 5: Solve for x
    x = 3,055,309.86/1,778.15
  6. Step 6: Final answer
    x = 1,718.25

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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.