Home / 7,350.90-10,140.78-4,205.28

Finding the Fourth Proportional to 7,350.90, 10,140.78 and 4,205.28

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Solution

The fourth proportional to 7,350.90, 10,140.78 and 4,205.28 is: 5,801.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,350.90 : 10,140.78 = 4,205.28 : x
  2. Step 2: Convert to fraction form
    7,350.90/10,140.78 = 4,205.28/x
  3. Step 3: Cross multiply
    7,350.90x = 10,140.78 × 4,205.28
  4. Step 4: Simplify right side
    7,350.90x = 42,644,819.32
  5. Step 5: Solve for x
    x = 42,644,819.32/7,350.90
  6. Step 6: Final answer
    x = 5,801.31

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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.