Home / 7,215.45-9,956.02-4,190.71

Finding the Fourth Proportional to 7,215.45, 9,956.02 and 4,190.71

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Solution

The fourth proportional to 7,215.45, 9,956.02 and 4,190.71 is: 5,782.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.45 : 9,956.02 = 4,190.71 : x
  2. Step 2: Convert to fraction form
    7,215.45/9,956.02 = 4,190.71/x
  3. Step 3: Cross multiply
    7,215.45x = 9,956.02 × 4,190.71
  4. Step 4: Simplify right side
    7,215.45x = 41,722,721.84
  5. Step 5: Solve for x
    x = 41,722,721.84/7,215.45
  6. Step 6: Final answer
    x = 5,782.41

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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.