Home / 2,130.35-3,190.86-1,088.55

Finding the Fourth Proportional to 2,130.35, 3,190.86 and 1,088.55

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Solution

The fourth proportional to 2,130.35, 3,190.86 and 1,088.55 is: 1,630.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.35 : 3,190.86 = 1,088.55 : x
  2. Step 2: Convert to fraction form
    2,130.35/3,190.86 = 1,088.55/x
  3. Step 3: Cross multiply
    2,130.35x = 3,190.86 × 1,088.55
  4. Step 4: Simplify right side
    2,130.35x = 3,473,410.65
  5. Step 5: Solve for x
    x = 3,473,410.65/2,130.35
  6. Step 6: Final answer
    x = 1,630.45

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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.