Home / 7,122.41-9,828.42-3,935.67

Finding the Fourth Proportional to 7,122.41, 9,828.42 and 3,935.67

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Solution

The fourth proportional to 7,122.41, 9,828.42 and 3,935.67 is: 5,430.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.41 : 9,828.42 = 3,935.67 : x
  2. Step 2: Convert to fraction form
    7,122.41/9,828.42 = 3,935.67/x
  3. Step 3: Cross multiply
    7,122.41x = 9,828.42 × 3,935.67
  4. Step 4: Simplify right side
    7,122.41x = 38,681,417.74
  5. Step 5: Solve for x
    x = 38,681,417.74/7,122.41
  6. Step 6: Final answer
    x = 5,430.95

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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.