Home / 5,139.97-7,085.73-3,368.50

Finding the Fourth Proportional to 5,139.97, 7,085.73 and 3,368.50

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Solution

The fourth proportional to 5,139.97, 7,085.73 and 3,368.50 is: 4,643.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,139.97 : 7,085.73 = 3,368.50 : x
  2. Step 2: Convert to fraction form
    5,139.97/7,085.73 = 3,368.50/x
  3. Step 3: Cross multiply
    5,139.97x = 7,085.73 × 3,368.50
  4. Step 4: Simplify right side
    5,139.97x = 23,868,263.79
  5. Step 5: Solve for x
    x = 23,868,263.79/5,139.97
  6. Step 6: Final answer
    x = 4,643.66

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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.