Home / 1,615.66-2,230.53-1,085.49

Finding the Fourth Proportional to 1,615.66, 2,230.53 and 1,085.49

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Solution

The fourth proportional to 1,615.66, 2,230.53 and 1,085.49 is: 1,498.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,615.66 : 2,230.53 = 1,085.49 : x
  2. Step 2: Convert to fraction form
    1,615.66/2,230.53 = 1,085.49/x
  3. Step 3: Cross multiply
    1,615.66x = 2,230.53 × 1,085.49
  4. Step 4: Simplify right side
    1,615.66x = 2,421,230.44
  5. Step 5: Solve for x
    x = 2,421,230.44/1,615.66
  6. Step 6: Final answer
    x = 1,498.60

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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.