Home / 1,535.47-2,119.22-872.35

Finding the Fourth Proportional to 1,535.47, 2,119.22 and 872.35

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Solution

The fourth proportional to 1,535.47, 2,119.22 and 872.35 is: 1,204.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.47 : 2,119.22 = 872.35 : x
  2. Step 2: Convert to fraction form
    1,535.47/2,119.22 = 872.35/x
  3. Step 3: Cross multiply
    1,535.47x = 2,119.22 × 872.35
  4. Step 4: Simplify right side
    1,535.47x = 1,848,701.57
  5. Step 5: Solve for x
    x = 1,848,701.57/1,535.47
  6. Step 6: Final answer
    x = 1,204.00

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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.