Home / 2,165.35-2,988.40-1,326.60

Finding the Fourth Proportional to 2,165.35, 2,988.40 and 1,326.60

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Solution

The fourth proportional to 2,165.35, 2,988.40 and 1,326.60 is: 1,830.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.35 : 2,988.40 = 1,326.60 : x
  2. Step 2: Convert to fraction form
    2,165.35/2,988.40 = 1,326.60/x
  3. Step 3: Cross multiply
    2,165.35x = 2,988.40 × 1,326.60
  4. Step 4: Simplify right side
    2,165.35x = 3,964,411.44
  5. Step 5: Solve for x
    x = 3,964,411.44/2,165.35
  6. Step 6: Final answer
    x = 1,830.84

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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.