Home / 8,386.77-12,580.71-2,839.35

Finding the Fourth Proportional to 8,386.77, 12,580.71 and 2,839.35

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Solution

The fourth proportional to 8,386.77, 12,580.71 and 2,839.35 is: 4,259.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,386.77 : 12,580.71 = 2,839.35 : x
  2. Step 2: Convert to fraction form
    8,386.77/12,580.71 = 2,839.35/x
  3. Step 3: Cross multiply
    8,386.77x = 12,580.71 × 2,839.35
  4. Step 4: Simplify right side
    8,386.77x = 35,721,038.94
  5. Step 5: Solve for x
    x = 35,721,038.94/8,386.77
  6. Step 6: Final answer
    x = 4,259.21

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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.