Home / 3,935.15-5,430.50-2,166.76

Finding the Fourth Proportional to 3,935.15, 5,430.50 and 2,166.76

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Solution

The fourth proportional to 3,935.15, 5,430.50 and 2,166.76 is: 2,990.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,935.15 : 5,430.50 = 2,166.76 : x
  2. Step 2: Convert to fraction form
    3,935.15/5,430.50 = 2,166.76/x
  3. Step 3: Cross multiply
    3,935.15x = 5,430.50 × 2,166.76
  4. Step 4: Simplify right side
    3,935.15x = 11,766,565.77
  5. Step 5: Solve for x
    x = 11,766,565.77/3,935.15
  6. Step 6: Final answer
    x = 2,990.12

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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.