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Finding the Fourth Proportional to 4,980.76, 6,870.86 and 4,037.61

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Solution

The fourth proportional to 4,980.76, 6,870.86 and 4,037.61 is: 5,569.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,980.76 : 6,870.86 = 4,037.61 : x
  2. Step 2: Convert to fraction form
    4,980.76/6,870.86 = 4,037.61/x
  3. Step 3: Cross multiply
    4,980.76x = 6,870.86 × 4,037.61
  4. Step 4: Simplify right side
    4,980.76x = 27,741,873.76
  5. Step 5: Solve for x
    x = 27,741,873.76/4,980.76
  6. Step 6: Final answer
    x = 5,569.81

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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.