Home / 2,913.28-4,017.04-2,168.64

Finding the Fourth Proportional to 2,913.28, 4,017.04 and 2,168.64

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Solution

The fourth proportional to 2,913.28, 4,017.04 and 2,168.64 is: 2,990.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.28 : 4,017.04 = 2,168.64 : x
  2. Step 2: Convert to fraction form
    2,913.28/4,017.04 = 2,168.64/x
  3. Step 3: Cross multiply
    2,913.28x = 4,017.04 × 2,168.64
  4. Step 4: Simplify right side
    2,913.28x = 8,711,513.63
  5. Step 5: Solve for x
    x = 8,711,513.63/2,913.28
  6. Step 6: Final answer
    x = 2,990.28

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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.