Home / 3,120.39-4,681.44-1,146.24

Finding the Fourth Proportional to 3,120.39, 4,681.44 and 1,146.24

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Solution

The fourth proportional to 3,120.39, 4,681.44 and 1,146.24 is: 1,719.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.39 : 4,681.44 = 1,146.24 : x
  2. Step 2: Convert to fraction form
    3,120.39/4,681.44 = 1,146.24/x
  3. Step 3: Cross multiply
    3,120.39x = 4,681.44 × 1,146.24
  4. Step 4: Simplify right side
    3,120.39x = 5,366,053.79
  5. Step 5: Solve for x
    x = 5,366,053.79/3,120.39
  6. Step 6: Final answer
    x = 1,719.67

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Double scale
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1.5x scale

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.