Home / 2,125.03-2,931.69-1,228.60

Finding the Fourth Proportional to 2,125.03, 2,931.69 and 1,228.60

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Solution

The fourth proportional to 2,125.03, 2,931.69 and 1,228.60 is: 1,694.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.03 : 2,931.69 = 1,228.60 : x
  2. Step 2: Convert to fraction form
    2,125.03/2,931.69 = 1,228.60/x
  3. Step 3: Cross multiply
    2,125.03x = 2,931.69 × 1,228.60
  4. Step 4: Simplify right side
    2,125.03x = 3,601,879.35
  5. Step 5: Solve for x
    x = 3,601,879.35/2,125.03
  6. Step 6: Final answer
    x = 1,694.98

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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.