Home / 2,784.16-3,842.60-2,119.76

Finding the Fourth Proportional to 2,784.16, 3,842.60 and 2,119.76

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Solution

The fourth proportional to 2,784.16, 3,842.60 and 2,119.76 is: 2,925.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,784.16 : 3,842.60 = 2,119.76 : x
  2. Step 2: Convert to fraction form
    2,784.16/3,842.60 = 2,119.76/x
  3. Step 3: Cross multiply
    2,784.16x = 3,842.60 × 2,119.76
  4. Step 4: Simplify right side
    2,784.16x = 8,145,389.78
  5. Step 5: Solve for x
    x = 8,145,389.78/2,784.16
  6. Step 6: Final answer
    x = 2,925.62

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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.