Home / 2,289.80-3,157.56-1,959.32

Finding the Fourth Proportional to 2,289.80, 3,157.56 and 1,959.32

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Solution

The fourth proportional to 2,289.80, 3,157.56 and 1,959.32 is: 2,701.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.80 : 3,157.56 = 1,959.32 : x
  2. Step 2: Convert to fraction form
    2,289.80/3,157.56 = 1,959.32/x
  3. Step 3: Cross multiply
    2,289.80x = 3,157.56 × 1,959.32
  4. Step 4: Simplify right side
    2,289.80x = 6,186,654.67
  5. Step 5: Solve for x
    x = 6,186,654.67/2,289.80
  6. Step 6: Final answer
    x = 2,701.84

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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.