Home / 8,721.49-13,071.39-4,275.51

Finding the Fourth Proportional to 8,721.49, 13,071.39 and 4,275.51

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Solution

The fourth proportional to 8,721.49, 13,071.39 and 4,275.51 is: 6,407.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,721.49 : 13,071.39 = 4,275.51 : x
  2. Step 2: Convert to fraction form
    8,721.49/13,071.39 = 4,275.51/x
  3. Step 3: Cross multiply
    8,721.49x = 13,071.39 × 4,275.51
  4. Step 4: Simplify right side
    8,721.49x = 55,886,858.66
  5. Step 5: Solve for x
    x = 55,886,858.66/8,721.49
  6. Step 6: Final answer
    x = 6,407.95

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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.