Home / 1,207.30-1,808.95-1,106.42

Finding the Fourth Proportional to 1,207.30, 1,808.95 and 1,106.42

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Solution

The fourth proportional to 1,207.30, 1,808.95 and 1,106.42 is: 1,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.30 : 1,808.95 = 1,106.42 : x
  2. Step 2: Convert to fraction form
    1,207.30/1,808.95 = 1,106.42/x
  3. Step 3: Cross multiply
    1,207.30x = 1,808.95 × 1,106.42
  4. Step 4: Simplify right side
    1,207.30x = 2,001,458.46
  5. Step 5: Solve for x
    x = 2,001,458.46/1,207.30
  6. Step 6: Final answer
    x = 1,657.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.