Home / 9,879.04-13,634.76-5,689.72

Finding the Fourth Proportional to 9,879.04, 13,634.76 and 5,689.72

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Solution

The fourth proportional to 9,879.04, 13,634.76 and 5,689.72 is: 7,852.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,879.04 : 13,634.76 = 5,689.72 : x
  2. Step 2: Convert to fraction form
    9,879.04/13,634.76 = 5,689.72/x
  3. Step 3: Cross multiply
    9,879.04x = 13,634.76 × 5,689.72
  4. Step 4: Simplify right side
    9,879.04x = 77,577,966.67
  5. Step 5: Solve for x
    x = 77,577,966.67/9,879.04
  6. Step 6: Final answer
    x = 7,852.78

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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.