Home / 2,124.26-2,931.09-1,284.40

Finding the Fourth Proportional to 2,124.26, 2,931.09 and 1,284.40

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Solution

The fourth proportional to 2,124.26, 2,931.09 and 1,284.40 is: 1,772.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124.26 : 2,931.09 = 1,284.40 : x
  2. Step 2: Convert to fraction form
    2,124.26/2,931.09 = 1,284.40/x
  3. Step 3: Cross multiply
    2,124.26x = 2,931.09 × 1,284.40
  4. Step 4: Simplify right side
    2,124.26x = 3,764,692.00
  5. Step 5: Solve for x
    x = 3,764,692.00/2,124.26
  6. Step 6: Final answer
    x = 1,772.24

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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.