Home / 9,780.06-13,495.20-5,531.70

Finding the Fourth Proportional to 9,780.06, 13,495.20 and 5,531.70

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Solution

The fourth proportional to 9,780.06, 13,495.20 and 5,531.70 is: 7,633.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,780.06 : 13,495.20 = 5,531.70 : x
  2. Step 2: Convert to fraction form
    9,780.06/13,495.20 = 5,531.70/x
  3. Step 3: Cross multiply
    9,780.06x = 13,495.20 × 5,531.70
  4. Step 4: Simplify right side
    9,780.06x = 74,651,397.84
  5. Step 5: Solve for x
    x = 74,651,397.84/9,780.06
  6. Step 6: Final answer
    x = 7,633.02

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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.