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Finding the Fourth Proportional to 2,869.02, 4,303.53 and 921.39

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Solution

The fourth proportional to 2,869.02, 4,303.53 and 921.39 is: 1,382.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,869.02 : 4,303.53 = 921.39 : x
  2. Step 2: Convert to fraction form
    2,869.02/4,303.53 = 921.39/x
  3. Step 3: Cross multiply
    2,869.02x = 4,303.53 × 921.39
  4. Step 4: Simplify right side
    2,869.02x = 3,965,229.51
  5. Step 5: Solve for x
    x = 3,965,229.51/2,869.02
  6. Step 6: Final answer
    x = 1,382.09

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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.