Home / 7,189-9,920.67-4,045.12

Finding the Fourth Proportional to 7,189, 9,920.67 and 4,045.12

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Solution

The fourth proportional to 7,189, 9,920.67 and 4,045.12 is: 5,582.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,189 : 9,920.67 = 4,045.12 : x
  2. Step 2: Convert to fraction form
    7,189/9,920.67 = 4,045.12/x
  3. Step 3: Cross multiply
    7,189x = 9,920.67 × 4,045.12
  4. Step 4: Simplify right side
    7,189x = 40,130,300.63
  5. Step 5: Solve for x
    x = 40,130,300.63/7,189
  6. Step 6: Final answer
    x = 5,582.18

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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.