Home / 2,487.39-3,432.21-1,439.25

Finding the Fourth Proportional to 2,487.39, 3,432.21 and 1,439.25

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Solution

The fourth proportional to 2,487.39, 3,432.21 and 1,439.25 is: 1,985.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.39 : 3,432.21 = 1,439.25 : x
  2. Step 2: Convert to fraction form
    2,487.39/3,432.21 = 1,439.25/x
  3. Step 3: Cross multiply
    2,487.39x = 3,432.21 × 1,439.25
  4. Step 4: Simplify right side
    2,487.39x = 4,939,808.24
  5. Step 5: Solve for x
    x = 4,939,808.24/2,487.39
  6. Step 6: Final answer
    x = 1,985.94

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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.