Home / 5,656.90-7,806.52-3,139.42

Finding the Fourth Proportional to 5,656.90, 7,806.52 and 3,139.42

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Solution

The fourth proportional to 5,656.90, 7,806.52 and 3,139.42 is: 4,332.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,656.90 : 7,806.52 = 3,139.42 : x
  2. Step 2: Convert to fraction form
    5,656.90/7,806.52 = 3,139.42/x
  3. Step 3: Cross multiply
    5,656.90x = 7,806.52 × 3,139.42
  4. Step 4: Simplify right side
    5,656.90x = 24,507,945.02
  5. Step 5: Solve for x
    x = 24,507,945.02/5,656.90
  6. Step 6: Final answer
    x = 4,332.40

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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.