Home / 3,386.10-4,672.11-1,988.10

Finding the Fourth Proportional to 3,386.10, 4,672.11 and 1,988.10

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Solution

The fourth proportional to 3,386.10, 4,672.11 and 1,988.10 is: 2,743.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.10 : 4,672.11 = 1,988.10 : x
  2. Step 2: Convert to fraction form
    3,386.10/4,672.11 = 1,988.10/x
  3. Step 3: Cross multiply
    3,386.10x = 4,672.11 × 1,988.10
  4. Step 4: Simplify right side
    3,386.10x = 9,288,621.89
  5. Step 5: Solve for x
    x = 9,288,621.89/3,386.10
  6. Step 6: Final answer
    x = 2,743.16

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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.