Home / 3,155.10-4,348.98-2,779.68

Finding the Fourth Proportional to 3,155.10, 4,348.98 and 2,779.68

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Solution

The fourth proportional to 3,155.10, 4,348.98 and 2,779.68 is: 3,831.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,155.10 : 4,348.98 = 2,779.68 : x
  2. Step 2: Convert to fraction form
    3,155.10/4,348.98 = 2,779.68/x
  3. Step 3: Cross multiply
    3,155.10x = 4,348.98 × 2,779.68
  4. Step 4: Simplify right side
    3,155.10x = 12,088,772.73
  5. Step 5: Solve for x
    x = 12,088,772.73/3,155.10
  6. Step 6: Final answer
    x = 3,831.50

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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.