Home / 1,207.58-1,655.29-1,191.18

Finding the Fourth Proportional to 1,207.58, 1,655.29 and 1,191.18

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Solution

The fourth proportional to 1,207.58, 1,655.29 and 1,191.18 is: 1,632.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,207.58 : 1,655.29 = 1,191.18 : x
  2. Step 2: Convert to fraction form
    1,207.58/1,655.29 = 1,191.18/x
  3. Step 3: Cross multiply
    1,207.58x = 1,655.29 × 1,191.18
  4. Step 4: Simplify right side
    1,207.58x = 1,971,748.34
  5. Step 5: Solve for x
    x = 1,971,748.34/1,207.58
  6. Step 6: Final answer
    x = 1,632.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.