Home / 4,970.80-6,858.20-2,874.64

Finding the Fourth Proportional to 4,970.80, 6,858.20 and 2,874.64

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Solution

The fourth proportional to 4,970.80, 6,858.20 and 2,874.64 is: 3,966.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,970.80 : 6,858.20 = 2,874.64 : x
  2. Step 2: Convert to fraction form
    4,970.80/6,858.20 = 2,874.64/x
  3. Step 3: Cross multiply
    4,970.80x = 6,858.20 × 2,874.64
  4. Step 4: Simplify right side
    4,970.80x = 19,714,856.05
  5. Step 5: Solve for x
    x = 19,714,856.05/4,970.80
  6. Step 6: Final answer
    x = 3,966.13

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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.