Home / 7,712.21-10,642.88-4,175.42

Finding the Fourth Proportional to 7,712.21, 10,642.88 and 4,175.42

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Solution

The fourth proportional to 7,712.21, 10,642.88 and 4,175.42 is: 5,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.21 : 10,642.88 = 4,175.42 : x
  2. Step 2: Convert to fraction form
    7,712.21/10,642.88 = 4,175.42/x
  3. Step 3: Cross multiply
    7,712.21x = 10,642.88 × 4,175.42
  4. Step 4: Simplify right side
    7,712.21x = 44,438,504.45
  5. Step 5: Solve for x
    x = 44,438,504.45/7,712.21
  6. Step 6: Final answer
    x = 5,762.10

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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.