Home / 7,720.18-10,648.22-4,888.02

Finding the Fourth Proportional to 7,720.18, 10,648.22 and 4,888.02

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Solution

The fourth proportional to 7,720.18, 10,648.22 and 4,888.02 is: 6,741.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.18 : 10,648.22 = 4,888.02 : x
  2. Step 2: Convert to fraction form
    7,720.18/10,648.22 = 4,888.02/x
  3. Step 3: Cross multiply
    7,720.18x = 10,648.22 × 4,888.02
  4. Step 4: Simplify right side
    7,720.18x = 52,048,671.30
  5. Step 5: Solve for x
    x = 52,048,671.30/7,720.18
  6. Step 6: Final answer
    x = 6,741.90

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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.