Home / 2,649.12-3,655.52-1,854.20

Finding the Fourth Proportional to 2,649.12, 3,655.52 and 1,854.20

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Solution

The fourth proportional to 2,649.12, 3,655.52 and 1,854.20 is: 2,558.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,649.12 : 3,655.52 = 1,854.20 : x
  2. Step 2: Convert to fraction form
    2,649.12/3,655.52 = 1,854.20/x
  3. Step 3: Cross multiply
    2,649.12x = 3,655.52 × 1,854.20
  4. Step 4: Simplify right side
    2,649.12x = 6,778,065.18
  5. Step 5: Solve for x
    x = 6,778,065.18/2,649.12
  6. Step 6: Final answer
    x = 2,558.61

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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.