Home / 5,246.71-7,240.30-3,121.76

Finding the Fourth Proportional to 5,246.71, 7,240.30 and 3,121.76

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Solution

The fourth proportional to 5,246.71, 7,240.30 and 3,121.76 is: 4,307.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,246.71 : 7,240.30 = 3,121.76 : x
  2. Step 2: Convert to fraction form
    5,246.71/7,240.30 = 3,121.76/x
  3. Step 3: Cross multiply
    5,246.71x = 7,240.30 × 3,121.76
  4. Step 4: Simplify right side
    5,246.71x = 22,602,448.50
  5. Step 5: Solve for x
    x = 22,602,448.50/5,246.71
  6. Step 6: Final answer
    x = 4,307.93

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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.