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Finding the Fourth Proportional to 7,350.50, 10,143.70 and 4,038.50

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Solution

The fourth proportional to 7,350.50, 10,143.70 and 4,038.50 is: 5,573.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,350.50 : 10,143.70 = 4,038.50 : x
  2. Step 2: Convert to fraction form
    7,350.50/10,143.70 = 4,038.50/x
  3. Step 3: Cross multiply
    7,350.50x = 10,143.70 × 4,038.50
  4. Step 4: Simplify right side
    7,350.50x = 40,965,332.45
  5. Step 5: Solve for x
    x = 40,965,332.45/7,350.50
  6. Step 6: Final answer
    x = 5,573.14

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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.