Home / 9,348.21-12,900.51-5,156.46

Finding the Fourth Proportional to 9,348.21, 12,900.51 and 5,156.46

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Solution

The fourth proportional to 9,348.21, 12,900.51 and 5,156.46 is: 7,115.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,348.21 : 12,900.51 = 5,156.46 : x
  2. Step 2: Convert to fraction form
    9,348.21/12,900.51 = 5,156.46/x
  3. Step 3: Cross multiply
    9,348.21x = 12,900.51 × 5,156.46
  4. Step 4: Simplify right side
    9,348.21x = 66,520,963.79
  5. Step 5: Solve for x
    x = 66,520,963.79/9,348.21
  6. Step 6: Final answer
    x = 7,115.90

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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.