Home / 3,087.89-4,631.88-1,113.65

Finding the Fourth Proportional to 3,087.89, 4,631.88 and 1,113.65

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Solution

The fourth proportional to 3,087.89, 4,631.88 and 1,113.65 is: 1,670.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.89 : 4,631.88 = 1,113.65 : x
  2. Step 2: Convert to fraction form
    3,087.89/4,631.88 = 1,113.65/x
  3. Step 3: Cross multiply
    3,087.89x = 4,631.88 × 1,113.65
  4. Step 4: Simplify right side
    3,087.89x = 5,158,291.55
  5. Step 5: Solve for x
    x = 5,158,291.55/3,087.89
  6. Step 6: Final answer
    x = 1,670.49

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Double scale
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Similar ratio
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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.