Home / 1,215.26-1,675.05-1,110.69

Finding the Fourth Proportional to 1,215.26, 1,675.05 and 1,110.69

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Solution

The fourth proportional to 1,215.26, 1,675.05 and 1,110.69 is: 1,530.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215.26 : 1,675.05 = 1,110.69 : x
  2. Step 2: Convert to fraction form
    1,215.26/1,675.05 = 1,110.69/x
  3. Step 3: Cross multiply
    1,215.26x = 1,675.05 × 1,110.69
  4. Step 4: Simplify right side
    1,215.26x = 1,860,461.28
  5. Step 5: Solve for x
    x = 1,860,461.28/1,215.26
  6. Step 6: Final answer
    x = 1,530.92

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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.