Home / 4,859.20-7,288.80-3,012.40

Finding the Fourth Proportional to 4,859.20, 7,288.80 and 3,012.40

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Solution

The fourth proportional to 4,859.20, 7,288.80 and 3,012.40 is: 4,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,859.20 : 7,288.80 = 3,012.40 : x
  2. Step 2: Convert to fraction form
    4,859.20/7,288.80 = 3,012.40/x
  3. Step 3: Cross multiply
    4,859.20x = 7,288.80 × 3,012.40
  4. Step 4: Simplify right side
    4,859.20x = 21,956,781.12
  5. Step 5: Solve for x
    x = 21,956,781.12/4,859.20
  6. Step 6: Final answer
    x = 4,518.60

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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.