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Finding the Fourth Proportional to 2,460.07, 3,690.20 and 728.70

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Solution

The fourth proportional to 2,460.07, 3,690.20 and 728.70 is: 1,093.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,460.07 : 3,690.20 = 728.70 : x
  2. Step 2: Convert to fraction form
    2,460.07/3,690.20 = 728.70/x
  3. Step 3: Cross multiply
    2,460.07x = 3,690.20 × 728.70
  4. Step 4: Simplify right side
    2,460.07x = 2,689,048.74
  5. Step 5: Solve for x
    x = 2,689,048.74/2,460.07
  6. Step 6: Final answer
    x = 1,093.08

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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.