Home / 2,165.01-2,988.32-1,281.12

Finding the Fourth Proportional to 2,165.01, 2,988.32 and 1,281.12

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Solution

The fourth proportional to 2,165.01, 2,988.32 and 1,281.12 is: 1,768.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.01 : 2,988.32 = 1,281.12 : x
  2. Step 2: Convert to fraction form
    2,165.01/2,988.32 = 1,281.12/x
  3. Step 3: Cross multiply
    2,165.01x = 2,988.32 × 1,281.12
  4. Step 4: Simplify right side
    2,165.01x = 3,828,396.52
  5. Step 5: Solve for x
    x = 3,828,396.52/2,165.01
  6. Step 6: Final answer
    x = 1,768.30

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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.