Home / 7,719.75-10,655.10-4,577.76

Finding the Fourth Proportional to 7,719.75, 10,655.10 and 4,577.76

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Solution

The fourth proportional to 7,719.75, 10,655.10 and 4,577.76 is: 6,318.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.75 : 10,655.10 = 4,577.76 : x
  2. Step 2: Convert to fraction form
    7,719.75/10,655.10 = 4,577.76/x
  3. Step 3: Cross multiply
    7,719.75x = 10,655.10 × 4,577.76
  4. Step 4: Simplify right side
    7,719.75x = 48,776,490.58
  5. Step 5: Solve for x
    x = 48,776,490.58/7,719.75
  6. Step 6: Final answer
    x = 6,318.40

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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.