Home / 7,712.15-10,642.75-4,175.36

Finding the Fourth Proportional to 7,712.15, 10,642.75 and 4,175.36

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Solution

The fourth proportional to 7,712.15, 10,642.75 and 4,175.36 is: 5,761.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,712.15 : 10,642.75 = 4,175.36 : x
  2. Step 2: Convert to fraction form
    7,712.15/10,642.75 = 4,175.36/x
  3. Step 3: Cross multiply
    7,712.15x = 10,642.75 × 4,175.36
  4. Step 4: Simplify right side
    7,712.15x = 44,437,312.64
  5. Step 5: Solve for x
    x = 44,437,312.64/7,712.15
  6. Step 6: Final answer
    x = 5,761.99

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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.