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Finding the Fourth Proportional to 2,130.48, 3,180.48 and 2,035.92

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Solution

The fourth proportional to 2,130.48, 3,180.48 and 2,035.92 is: 3,039.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.48 : 3,180.48 = 2,035.92 : x
  2. Step 2: Convert to fraction form
    2,130.48/3,180.48 = 2,035.92/x
  3. Step 3: Cross multiply
    2,130.48x = 3,180.48 × 2,035.92
  4. Step 4: Simplify right side
    2,130.48x = 6,475,202.84
  5. Step 5: Solve for x
    x = 6,475,202.84/2,130.48
  6. Step 6: Final answer
    x = 3,039.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.