Home / 7,518.42-10,380.35-4,689.90

Finding the Fourth Proportional to 7,518.42, 10,380.35 and 4,689.90

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Solution

The fourth proportional to 7,518.42, 10,380.35 and 4,689.90 is: 6,475.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,518.42 : 10,380.35 = 4,689.90 : x
  2. Step 2: Convert to fraction form
    7,518.42/10,380.35 = 4,689.90/x
  3. Step 3: Cross multiply
    7,518.42x = 10,380.35 × 4,689.90
  4. Step 4: Simplify right side
    7,518.42x = 48,682,815.19
  5. Step 5: Solve for x
    x = 48,682,815.19/7,518.42
  6. Step 6: Final answer
    x = 6,475.14

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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.