Home / 1,535.19-2,121.26-1,206.23

Finding the Fourth Proportional to 1,535.19, 2,121.26 and 1,206.23

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Solution

The fourth proportional to 1,535.19, 2,121.26 and 1,206.23 is: 1,666.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.19 : 2,121.26 = 1,206.23 : x
  2. Step 2: Convert to fraction form
    1,535.19/2,121.26 = 1,206.23/x
  3. Step 3: Cross multiply
    1,535.19x = 2,121.26 × 1,206.23
  4. Step 4: Simplify right side
    1,535.19x = 2,558,710.81
  5. Step 5: Solve for x
    x = 2,558,710.81/1,535.19
  6. Step 6: Final answer
    x = 1,666.71

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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.