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Finding the Fourth Proportional to 5,011.51, 7,518.86 and 1,724.78

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Solution

The fourth proportional to 5,011.51, 7,518.86 and 1,724.78 is: 2,587.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,011.51 : 7,518.86 = 1,724.78 : x
  2. Step 2: Convert to fraction form
    5,011.51/7,518.86 = 1,724.78/x
  3. Step 3: Cross multiply
    5,011.51x = 7,518.86 × 1,724.78
  4. Step 4: Simplify right side
    5,011.51x = 12,968,379.35
  5. Step 5: Solve for x
    x = 12,968,379.35/5,011.51
  6. Step 6: Final answer
    x = 2,587.72

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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.