Home / 1,669.55-2,301.78-1,369.70

Finding the Fourth Proportional to 1,669.55, 2,301.78 and 1,369.70

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Solution

The fourth proportional to 1,669.55, 2,301.78 and 1,369.70 is: 1,888.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,669.55 : 2,301.78 = 1,369.70 : x
  2. Step 2: Convert to fraction form
    1,669.55/2,301.78 = 1,369.70/x
  3. Step 3: Cross multiply
    1,669.55x = 2,301.78 × 1,369.70
  4. Step 4: Simplify right side
    1,669.55x = 3,152,748.07
  5. Step 5: Solve for x
    x = 3,152,748.07/1,669.55
  6. Step 6: Final answer
    x = 1,888.38

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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.