Home / 7,778.16-10,731.96-4,987.44

Finding the Fourth Proportional to 7,778.16, 10,731.96 and 4,987.44

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Solution

The fourth proportional to 7,778.16, 10,731.96 and 4,987.44 is: 6,881.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,778.16 : 10,731.96 = 4,987.44 : x
  2. Step 2: Convert to fraction form
    7,778.16/10,731.96 = 4,987.44/x
  3. Step 3: Cross multiply
    7,778.16x = 10,731.96 × 4,987.44
  4. Step 4: Simplify right side
    7,778.16x = 53,525,006.58
  5. Step 5: Solve for x
    x = 53,525,006.58/7,778.16
  6. Step 6: Final answer
    x = 6,881.45

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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.