Home / 1,289.13-1,931.01-1,069.25

Finding the Fourth Proportional to 1,289.13, 1,931.01 and 1,069.25

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Solution

The fourth proportional to 1,289.13, 1,931.01 and 1,069.25 is: 1,601.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289.13 : 1,931.01 = 1,069.25 : x
  2. Step 2: Convert to fraction form
    1,289.13/1,931.01 = 1,069.25/x
  3. Step 3: Cross multiply
    1,289.13x = 1,931.01 × 1,069.25
  4. Step 4: Simplify right side
    1,289.13x = 2,064,722.79
  5. Step 5: Solve for x
    x = 2,064,722.79/1,289.13
  6. Step 6: Final answer
    x = 1,601.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.