Home / 1,729.08-2,387.34-1,636.20

Finding the Fourth Proportional to 1,729.08, 2,387.34 and 1,636.20

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Solution

The fourth proportional to 1,729.08, 2,387.34 and 1,636.20 is: 2,259.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,729.08 : 2,387.34 = 1,636.20 : x
  2. Step 2: Convert to fraction form
    1,729.08/2,387.34 = 1,636.20/x
  3. Step 3: Cross multiply
    1,729.08x = 2,387.34 × 1,636.20
  4. Step 4: Simplify right side
    1,729.08x = 3,906,165.71
  5. Step 5: Solve for x
    x = 3,906,165.71/1,729.08
  6. Step 6: Final answer
    x = 2,259.10

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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.