Home / 2,165.65-2,986.20-1,669.52

Finding the Fourth Proportional to 2,165.65, 2,986.20 and 1,669.52

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Solution

The fourth proportional to 2,165.65, 2,986.20 and 1,669.52 is: 2,302.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.65 : 2,986.20 = 1,669.52 : x
  2. Step 2: Convert to fraction form
    2,165.65/2,986.20 = 1,669.52/x
  3. Step 3: Cross multiply
    2,165.65x = 2,986.20 × 1,669.52
  4. Step 4: Simplify right side
    2,165.65x = 4,985,528.09
  5. Step 5: Solve for x
    x = 4,985,528.09/2,165.65
  6. Step 6: Final answer
    x = 2,302.10

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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.