Home / 3,237.50-4,856.80-1,389.50

Finding the Fourth Proportional to 3,237.50, 4,856.80 and 1,389.50

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Solution

The fourth proportional to 3,237.50, 4,856.80 and 1,389.50 is: 2,084.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,237.50 : 4,856.80 = 1,389.50 : x
  2. Step 2: Convert to fraction form
    3,237.50/4,856.80 = 1,389.50/x
  3. Step 3: Cross multiply
    3,237.50x = 4,856.80 × 1,389.50
  4. Step 4: Simplify right side
    3,237.50x = 6,748,523.60
  5. Step 5: Solve for x
    x = 6,748,523.60/3,237.50
  6. Step 6: Final answer
    x = 2,084.49

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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.