Home / 7,867.77-10,857.51-4,331.21

Finding the Fourth Proportional to 7,867.77, 10,857.51 and 4,331.21

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Solution

The fourth proportional to 7,867.77, 10,857.51 and 4,331.21 is: 5,977.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,867.77 : 10,857.51 = 4,331.21 : x
  2. Step 2: Convert to fraction form
    7,867.77/10,857.51 = 4,331.21/x
  3. Step 3: Cross multiply
    7,867.77x = 10,857.51 × 4,331.21
  4. Step 4: Simplify right side
    7,867.77x = 47,026,101.60
  5. Step 5: Solve for x
    x = 47,026,101.60/7,867.77
  6. Step 6: Final answer
    x = 5,977.06

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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.