Home / 2,130.68-3,188.46-1,581.50

Finding the Fourth Proportional to 2,130.68, 3,188.46 and 1,581.50

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Solution

The fourth proportional to 2,130.68, 3,188.46 and 1,581.50 is: 2,366.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.68 : 3,188.46 = 1,581.50 : x
  2. Step 2: Convert to fraction form
    2,130.68/3,188.46 = 1,581.50/x
  3. Step 3: Cross multiply
    2,130.68x = 3,188.46 × 1,581.50
  4. Step 4: Simplify right side
    2,130.68x = 5,042,549.49
  5. Step 5: Solve for x
    x = 5,042,549.49/2,130.68
  6. Step 6: Final answer
    x = 2,366.64

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1.5x scale

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.