Home / 2,128.16-3,192.20-589.12

Finding the Fourth Proportional to 2,128.16, 3,192.20 and 589.12

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Solution

The fourth proportional to 2,128.16, 3,192.20 and 589.12 is: 883.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.16 : 3,192.20 = 589.12 : x
  2. Step 2: Convert to fraction form
    2,128.16/3,192.20 = 589.12/x
  3. Step 3: Cross multiply
    2,128.16x = 3,192.20 × 589.12
  4. Step 4: Simplify right side
    2,128.16x = 1,880,588.86
  5. Step 5: Solve for x
    x = 1,880,588.86/2,128.16
  6. Step 6: Final answer
    x = 883.67

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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.