Home / 4,870.45-7,301.40-2,891.20

Finding the Fourth Proportional to 4,870.45, 7,301.40 and 2,891.20

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Solution

The fourth proportional to 4,870.45, 7,301.40 and 2,891.20 is: 4,334.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,870.45 : 7,301.40 = 2,891.20 : x
  2. Step 2: Convert to fraction form
    4,870.45/7,301.40 = 2,891.20/x
  3. Step 3: Cross multiply
    4,870.45x = 7,301.40 × 2,891.20
  4. Step 4: Simplify right side
    4,870.45x = 21,109,807.68
  5. Step 5: Solve for x
    x = 21,109,807.68/4,870.45
  6. Step 6: Final answer
    x = 4,334.26

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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.