Home / 7,821.10-10,788.14-5,132.49

Finding the Fourth Proportional to 7,821.10, 10,788.14 and 5,132.49

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Solution

The fourth proportional to 7,821.10, 10,788.14 and 5,132.49 is: 7,079.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.10 : 10,788.14 = 5,132.49 : x
  2. Step 2: Convert to fraction form
    7,821.10/10,788.14 = 5,132.49/x
  3. Step 3: Cross multiply
    7,821.10x = 10,788.14 × 5,132.49
  4. Step 4: Simplify right side
    7,821.10x = 55,370,033.50
  5. Step 5: Solve for x
    x = 55,370,033.50/7,821.10
  6. Step 6: Final answer
    x = 7,079.57

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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.