Home / 9,283.40-13,828.63-8,780.39

Finding the Fourth Proportional to 9,283.40, 13,828.63 and 8,780.39

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Solution

The fourth proportional to 9,283.40, 13,828.63 and 8,780.39 is: 13,079.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,283.40 : 13,828.63 = 8,780.39 : x
  2. Step 2: Convert to fraction form
    9,283.40/13,828.63 = 8,780.39/x
  3. Step 3: Cross multiply
    9,283.40x = 13,828.63 × 8,780.39
  4. Step 4: Simplify right side
    9,283.40x = 121,420,673.47
  5. Step 5: Solve for x
    x = 121,420,673.47/9,283.40
  6. Step 6: Final answer
    x = 13,079.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.