Home / 9,418.10-12,998.43-5,438.90

Finding the Fourth Proportional to 9,418.10, 12,998.43 and 5,438.90

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Solution

The fourth proportional to 9,418.10, 12,998.43 and 5,438.90 is: 7,506.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,418.10 : 12,998.43 = 5,438.90 : x
  2. Step 2: Convert to fraction form
    9,418.10/12,998.43 = 5,438.90/x
  3. Step 3: Cross multiply
    9,418.10x = 12,998.43 × 5,438.90
  4. Step 4: Simplify right side
    9,418.10x = 70,697,160.93
  5. Step 5: Solve for x
    x = 70,697,160.93/9,418.10
  6. Step 6: Final answer
    x = 7,506.52

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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.