Home / 2,487.18-3,432.36-1,368.12

Finding the Fourth Proportional to 2,487.18, 3,432.36 and 1,368.12

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Solution

The fourth proportional to 2,487.18, 3,432.36 and 1,368.12 is: 1,888.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.18 : 3,432.36 = 1,368.12 : x
  2. Step 2: Convert to fraction form
    2,487.18/3,432.36 = 1,368.12/x
  3. Step 3: Cross multiply
    2,487.18x = 3,432.36 × 1,368.12
  4. Step 4: Simplify right side
    2,487.18x = 4,695,880.36
  5. Step 5: Solve for x
    x = 4,695,880.36/2,487.18
  6. Step 6: Final answer
    x = 1,888.03

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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.