Home / 7,639.84-10,537.86-4,987.90

Finding the Fourth Proportional to 7,639.84, 10,537.86 and 4,987.90

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Solution

The fourth proportional to 7,639.84, 10,537.86 and 4,987.90 is: 6,879.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,639.84 : 10,537.86 = 4,987.90 : x
  2. Step 2: Convert to fraction form
    7,639.84/10,537.86 = 4,987.90/x
  3. Step 3: Cross multiply
    7,639.84x = 10,537.86 × 4,987.90
  4. Step 4: Simplify right side
    7,639.84x = 52,561,791.89
  5. Step 5: Solve for x
    x = 52,561,791.89/7,639.84
  6. Step 6: Final answer
    x = 6,879.96

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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.