Home / 7,340.45-10,129.76-4,153.72

Finding the Fourth Proportional to 7,340.45, 10,129.76 and 4,153.72

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Solution

The fourth proportional to 7,340.45, 10,129.76 and 4,153.72 is: 5,732.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,340.45 : 10,129.76 = 4,153.72 : x
  2. Step 2: Convert to fraction form
    7,340.45/10,129.76 = 4,153.72/x
  3. Step 3: Cross multiply
    7,340.45x = 10,129.76 × 4,153.72
  4. Step 4: Simplify right side
    7,340.45x = 42,076,115.29
  5. Step 5: Solve for x
    x = 42,076,115.29/7,340.45
  6. Step 6: Final answer
    x = 5,732.09

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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.