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Finding the Fourth Proportional to 3,055.40, 4,583.10 and 746.90

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Solution

The fourth proportional to 3,055.40, 4,583.10 and 746.90 is: 1,120.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,055.40 : 4,583.10 = 746.90 : x
  2. Step 2: Convert to fraction form
    3,055.40/4,583.10 = 746.90/x
  3. Step 3: Cross multiply
    3,055.40x = 4,583.10 × 746.90
  4. Step 4: Simplify right side
    3,055.40x = 3,423,117.39
  5. Step 5: Solve for x
    x = 3,423,117.39/3,055.40
  6. Step 6: Final answer
    x = 1,120.35

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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.