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Finding the Fourth Proportional to 4,093.76, 6,140.02 and 1,320.07

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Solution

The fourth proportional to 4,093.76, 6,140.02 and 1,320.07 is: 1,979.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,093.76 : 6,140.02 = 1,320.07 : x
  2. Step 2: Convert to fraction form
    4,093.76/6,140.02 = 1,320.07/x
  3. Step 3: Cross multiply
    4,093.76x = 6,140.02 × 1,320.07
  4. Step 4: Simplify right side
    4,093.76x = 8,105,256.20
  5. Step 5: Solve for x
    x = 8,105,256.20/4,093.76
  6. Step 6: Final answer
    x = 1,979.91

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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.