Home / 5,695.81-7,860.20-3,177.77

Finding the Fourth Proportional to 5,695.81, 7,860.20 and 3,177.77

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Solution

The fourth proportional to 5,695.81, 7,860.20 and 3,177.77 is: 4,385.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,695.81 : 7,860.20 = 3,177.77 : x
  2. Step 2: Convert to fraction form
    5,695.81/7,860.20 = 3,177.77/x
  3. Step 3: Cross multiply
    5,695.81x = 7,860.20 × 3,177.77
  4. Step 4: Simplify right side
    5,695.81x = 24,977,868.45
  5. Step 5: Solve for x
    x = 24,977,868.45/5,695.81
  6. Step 6: Final answer
    x = 4,385.31

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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.