Home / 1,535.70-2,120.67-1,118.46

Finding the Fourth Proportional to 1,535.70, 2,120.67 and 1,118.46

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Solution

The fourth proportional to 1,535.70, 2,120.67 and 1,118.46 is: 1,544.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.70 : 2,120.67 = 1,118.46 : x
  2. Step 2: Convert to fraction form
    1,535.70/2,120.67 = 1,118.46/x
  3. Step 3: Cross multiply
    1,535.70x = 2,120.67 × 1,118.46
  4. Step 4: Simplify right side
    1,535.70x = 2,371,884.57
  5. Step 5: Solve for x
    x = 2,371,884.57/1,535.70
  6. Step 6: Final answer
    x = 1,544.50

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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.