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Finding the Fourth Proportional to 2,415.60, 3,624.08 and 684.24

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Solution

The fourth proportional to 2,415.60, 3,624.08 and 684.24 is: 1,026.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.60 : 3,624.08 = 684.24 : x
  2. Step 2: Convert to fraction form
    2,415.60/3,624.08 = 684.24/x
  3. Step 3: Cross multiply
    2,415.60x = 3,624.08 × 684.24
  4. Step 4: Simplify right side
    2,415.60x = 2,479,740.50
  5. Step 5: Solve for x
    x = 2,479,740.50/2,415.60
  6. Step 6: Final answer
    x = 1,026.55

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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.