Home / 1,158.48-1,729.44-1,117.98

Finding the Fourth Proportional to 1,158.48, 1,729.44 and 1,117.98

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Solution

The fourth proportional to 1,158.48, 1,729.44 and 1,117.98 is: 1,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,158.48 : 1,729.44 = 1,117.98 : x
  2. Step 2: Convert to fraction form
    1,158.48/1,729.44 = 1,117.98/x
  3. Step 3: Cross multiply
    1,158.48x = 1,729.44 × 1,117.98
  4. Step 4: Simplify right side
    1,158.48x = 1,933,479.33
  5. Step 5: Solve for x
    x = 1,933,479.33/1,158.48
  6. Step 6: Final answer
    x = 1,668.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.