Home / 7,215.57-9,955.85-4,070.61

Finding the Fourth Proportional to 7,215.57, 9,955.85 and 4,070.61

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Solution

The fourth proportional to 7,215.57, 9,955.85 and 4,070.61 is: 5,616.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.57 : 9,955.85 = 4,070.61 : x
  2. Step 2: Convert to fraction form
    7,215.57/9,955.85 = 4,070.61/x
  3. Step 3: Cross multiply
    7,215.57x = 9,955.85 × 4,070.61
  4. Step 4: Simplify right side
    7,215.57x = 40,526,362.22
  5. Step 5: Solve for x
    x = 40,526,362.22/7,215.57
  6. Step 6: Final answer
    x = 5,616.52

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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.