Home / 7,215.16-9,956.82-4,072.36

Finding the Fourth Proportional to 7,215.16, 9,956.82 and 4,072.36

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Solution

The fourth proportional to 7,215.16, 9,956.82 and 4,072.36 is: 5,619.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.16 : 9,956.82 = 4,072.36 : x
  2. Step 2: Convert to fraction form
    7,215.16/9,956.82 = 4,072.36/x
  3. Step 3: Cross multiply
    7,215.16x = 9,956.82 × 4,072.36
  4. Step 4: Simplify right side
    7,215.16x = 40,547,755.50
  5. Step 5: Solve for x
    x = 40,547,755.50/7,215.16
  6. Step 6: Final answer
    x = 5,619.80

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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.