Home / 1,669.32-2,302.20-1,079.28

Finding the Fourth Proportional to 1,669.32, 2,302.20 and 1,079.28

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Solution

The fourth proportional to 1,669.32, 2,302.20 and 1,079.28 is: 1,488.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.32 : 2,302.20 = 1,079.28 : x
  2. Step 2: Convert to fraction form
    1,669.32/2,302.20 = 1,079.28/x
  3. Step 3: Cross multiply
    1,669.32x = 2,302.20 × 1,079.28
  4. Step 4: Simplify right side
    1,669.32x = 2,484,718.42
  5. Step 5: Solve for x
    x = 2,484,718.42/1,669.32
  6. Step 6: Final answer
    x = 1,488.46

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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.