Home / 6,721.43-9,275.70-3,888.86

Finding the Fourth Proportional to 6,721.43, 9,275.70 and 3,888.86

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Solution

The fourth proportional to 6,721.43, 9,275.70 and 3,888.86 is: 5,366.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,721.43 : 9,275.70 = 3,888.86 : x
  2. Step 2: Convert to fraction form
    6,721.43/9,275.70 = 3,888.86/x
  3. Step 3: Cross multiply
    6,721.43x = 9,275.70 × 3,888.86
  4. Step 4: Simplify right side
    6,721.43x = 36,071,852.32
  5. Step 5: Solve for x
    x = 36,071,852.32/6,721.43
  6. Step 6: Final answer
    x = 5,366.70

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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.