Home / 1,535.61-2,119.20-872.49

Finding the Fourth Proportional to 1,535.61, 2,119.20 and 872.49

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Solution

The fourth proportional to 1,535.61, 2,119.20 and 872.49 is: 1,204.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.61 : 2,119.20 = 872.49 : x
  2. Step 2: Convert to fraction form
    1,535.61/2,119.20 = 872.49/x
  3. Step 3: Cross multiply
    1,535.61x = 2,119.20 × 872.49
  4. Step 4: Simplify right side
    1,535.61x = 1,848,980.81
  5. Step 5: Solve for x
    x = 1,848,980.81/1,535.61
  6. Step 6: Final answer
    x = 1,204.07

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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.