Home / 6,642.16-9,964.63-1,961.81

Finding the Fourth Proportional to 6,642.16, 9,964.63 and 1,961.81

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Solution

The fourth proportional to 6,642.16, 9,964.63 and 1,961.81 is: 2,943.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.16 : 9,964.63 = 1,961.81 : x
  2. Step 2: Convert to fraction form
    6,642.16/9,964.63 = 1,961.81/x
  3. Step 3: Cross multiply
    6,642.16x = 9,964.63 × 1,961.81
  4. Step 4: Simplify right side
    6,642.16x = 19,548,689.52
  5. Step 5: Solve for x
    x = 19,548,689.52/6,642.16
  6. Step 6: Final answer
    x = 2,943.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.