Home / 7,721.12-10,655.60-4,577.60

Finding the Fourth Proportional to 7,721.12, 10,655.60 and 4,577.60

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Solution

The fourth proportional to 7,721.12, 10,655.60 and 4,577.60 is: 6,317.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,721.12 : 10,655.60 = 4,577.60 : x
  2. Step 2: Convert to fraction form
    7,721.12/10,655.60 = 4,577.60/x
  3. Step 3: Cross multiply
    7,721.12x = 10,655.60 × 4,577.60
  4. Step 4: Simplify right side
    7,721.12x = 48,777,074.56
  5. Step 5: Solve for x
    x = 48,777,074.56/7,721.12
  6. Step 6: Final answer
    x = 6,317.36

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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.