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Finding the Fourth Proportional to 2,904.79, 4,008.55 and 1,611.22

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Solution

The fourth proportional to 2,904.79, 4,008.55 and 1,611.22 is: 2,223.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,904.79 : 4,008.55 = 1,611.22 : x
  2. Step 2: Convert to fraction form
    2,904.79/4,008.55 = 1,611.22/x
  3. Step 3: Cross multiply
    2,904.79x = 4,008.55 × 1,611.22
  4. Step 4: Simplify right side
    2,904.79x = 6,458,655.93
  5. Step 5: Solve for x
    x = 6,458,655.93/2,904.79
  6. Step 6: Final answer
    x = 2,223.45

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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.