Home / 9,421.40-13,002.30-5,231

Finding the Fourth Proportional to 9,421.40, 13,002.30 and 5,231

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Solution

The fourth proportional to 9,421.40, 13,002.30 and 5,231 is: 7,219.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.40 : 13,002.30 = 5,231 : x
  2. Step 2: Convert to fraction form
    9,421.40/13,002.30 = 5,231/x
  3. Step 3: Cross multiply
    9,421.40x = 13,002.30 × 5,231
  4. Step 4: Simplify right side
    9,421.40x = 68,015,031.30
  5. Step 5: Solve for x
    x = 68,015,031.30/9,421.40
  6. Step 6: Final answer
    x = 7,219.21

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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.