Home / 7,780.36-11,671.10-2,443.08

Finding the Fourth Proportional to 7,780.36, 11,671.10 and 2,443.08

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Solution

The fourth proportional to 7,780.36, 11,671.10 and 2,443.08 is: 3,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,780.36 : 11,671.10 = 2,443.08 : x
  2. Step 2: Convert to fraction form
    7,780.36/11,671.10 = 2,443.08/x
  3. Step 3: Cross multiply
    7,780.36x = 11,671.10 × 2,443.08
  4. Step 4: Simplify right side
    7,780.36x = 28,513,430.99
  5. Step 5: Solve for x
    x = 28,513,430.99/7,780.36
  6. Step 6: Final answer
    x = 3,664.80

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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.