Home / 7,639.86-10,542.81-4,282.89

Finding the Fourth Proportional to 7,639.86, 10,542.81 and 4,282.89

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Solution

The fourth proportional to 7,639.86, 10,542.81 and 4,282.89 is: 5,910.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.86 : 10,542.81 = 4,282.89 : x
  2. Step 2: Convert to fraction form
    7,639.86/10,542.81 = 4,282.89/x
  3. Step 3: Cross multiply
    7,639.86x = 10,542.81 × 4,282.89
  4. Step 4: Simplify right side
    7,639.86x = 45,153,695.52
  5. Step 5: Solve for x
    x = 45,153,695.52/7,639.86
  6. Step 6: Final answer
    x = 5,910.28

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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.