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Finding the Fourth Proportional to 7,348.90, 10,138.02 and 4,203.28

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Solution

The fourth proportional to 7,348.90, 10,138.02 and 4,203.28 is: 5,798.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,348.90 : 10,138.02 = 4,203.28 : x
  2. Step 2: Convert to fraction form
    7,348.90/10,138.02 = 4,203.28/x
  3. Step 3: Cross multiply
    7,348.90x = 10,138.02 × 4,203.28
  4. Step 4: Simplify right side
    7,348.90x = 42,612,936.71
  5. Step 5: Solve for x
    x = 42,612,936.71/7,348.90
  6. Step 6: Final answer
    x = 5,798.55

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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.