Home / 1,695.28-2,338.80-1,031.60

Finding the Fourth Proportional to 1,695.28, 2,338.80 and 1,031.60

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Solution

The fourth proportional to 1,695.28, 2,338.80 and 1,031.60 is: 1,423.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,695.28 : 2,338.80 = 1,031.60 : x
  2. Step 2: Convert to fraction form
    1,695.28/2,338.80 = 1,031.60/x
  3. Step 3: Cross multiply
    1,695.28x = 2,338.80 × 1,031.60
  4. Step 4: Simplify right side
    1,695.28x = 2,412,706.08
  5. Step 5: Solve for x
    x = 2,412,706.08/1,695.28
  6. Step 6: Final answer
    x = 1,423.19

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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.