Home / 7,215.12-9,957.15-4,230.54

Finding the Fourth Proportional to 7,215.12, 9,957.15 and 4,230.54

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Solution

The fourth proportional to 7,215.12, 9,957.15 and 4,230.54 is: 5,838.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.12 : 9,957.15 = 4,230.54 : x
  2. Step 2: Convert to fraction form
    7,215.12/9,957.15 = 4,230.54/x
  3. Step 3: Cross multiply
    7,215.12x = 9,957.15 × 4,230.54
  4. Step 4: Simplify right side
    7,215.12x = 42,124,121.36
  5. Step 5: Solve for x
    x = 42,124,121.36/7,215.12
  6. Step 6: Final answer
    x = 5,838.31

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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.