Home / 7,456.19-11,184.21-1,909.49

Finding the Fourth Proportional to 7,456.19, 11,184.21 and 1,909.49

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Solution

The fourth proportional to 7,456.19, 11,184.21 and 1,909.49 is: 2,864.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,456.19 : 11,184.21 = 1,909.49 : x
  2. Step 2: Convert to fraction form
    7,456.19/11,184.21 = 1,909.49/x
  3. Step 3: Cross multiply
    7,456.19x = 11,184.21 × 1,909.49
  4. Step 4: Simplify right side
    7,456.19x = 21,356,081.23
  5. Step 5: Solve for x
    x = 21,356,081.23/7,456.19
  6. Step 6: Final answer
    x = 2,864.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.