Home / 2,854.08-4,278.21-1,929.74

Finding the Fourth Proportional to 2,854.08, 4,278.21 and 1,929.74

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Solution

The fourth proportional to 2,854.08, 4,278.21 and 1,929.74 is: 2,892.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,854.08 : 4,278.21 = 1,929.74 : x
  2. Step 2: Convert to fraction form
    2,854.08/4,278.21 = 1,929.74/x
  3. Step 3: Cross multiply
    2,854.08x = 4,278.21 × 1,929.74
  4. Step 4: Simplify right side
    2,854.08x = 8,255,811.57
  5. Step 5: Solve for x
    x = 8,255,811.57/2,854.08
  6. Step 6: Final answer
    x = 2,892.63

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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.