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Finding the Fourth Proportional to 2,912.60, 4,019.04 and 1,653.20

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Solution

The fourth proportional to 2,912.60, 4,019.04 and 1,653.20 is: 2,281.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.60 : 4,019.04 = 1,653.20 : x
  2. Step 2: Convert to fraction form
    2,912.60/4,019.04 = 1,653.20/x
  3. Step 3: Cross multiply
    2,912.60x = 4,019.04 × 1,653.20
  4. Step 4: Simplify right side
    2,912.60x = 6,644,276.93
  5. Step 5: Solve for x
    x = 6,644,276.93/2,912.60
  6. Step 6: Final answer
    x = 2,281.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.