Home / 3,116.45-4,675.20-925.40

Finding the Fourth Proportional to 3,116.45, 4,675.20 and 925.40

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Solution

The fourth proportional to 3,116.45, 4,675.20 and 925.40 is: 1,388.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.45 : 4,675.20 = 925.40 : x
  2. Step 2: Convert to fraction form
    3,116.45/4,675.20 = 925.40/x
  3. Step 3: Cross multiply
    3,116.45x = 4,675.20 × 925.40
  4. Step 4: Simplify right side
    3,116.45x = 4,326,430.08
  5. Step 5: Solve for x
    x = 4,326,430.08/3,116.45
  6. Step 6: Final answer
    x = 1,388.26

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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.