Home / 7,158.12-9,878.28-4,175.76

Finding the Fourth Proportional to 7,158.12, 9,878.28 and 4,175.76

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Solution

The fourth proportional to 7,158.12, 9,878.28 and 4,175.76 is: 5,762.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,158.12 : 9,878.28 = 4,175.76 : x
  2. Step 2: Convert to fraction form
    7,158.12/9,878.28 = 4,175.76/x
  3. Step 3: Cross multiply
    7,158.12x = 9,878.28 × 4,175.76
  4. Step 4: Simplify right side
    7,158.12x = 41,249,326.49
  5. Step 5: Solve for x
    x = 41,249,326.49/7,158.12
  6. Step 6: Final answer
    x = 5,762.59

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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.