Home / 7,189.53-9,920.79-4,045.11

Finding the Fourth Proportional to 7,189.53, 9,920.79 and 4,045.11

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Solution

The fourth proportional to 7,189.53, 9,920.79 and 4,045.11 is: 5,581.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189.53 : 9,920.79 = 4,045.11 : x
  2. Step 2: Convert to fraction form
    7,189.53/9,920.79 = 4,045.11/x
  3. Step 3: Cross multiply
    7,189.53x = 9,920.79 × 4,045.11
  4. Step 4: Simplify right side
    7,189.53x = 40,130,686.84
  5. Step 5: Solve for x
    x = 40,130,686.84/7,189.53
  6. Step 6: Final answer
    x = 5,581.82

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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.