Home / 4,870.88-6,721.81-2,775

Finding the Fourth Proportional to 4,870.88, 6,721.81 and 2,775

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Solution

The fourth proportional to 4,870.88, 6,721.81 and 2,775 is: 3,829.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,870.88 : 6,721.81 = 2,775 : x
  2. Step 2: Convert to fraction form
    4,870.88/6,721.81 = 2,775/x
  3. Step 3: Cross multiply
    4,870.88x = 6,721.81 × 2,775
  4. Step 4: Simplify right side
    4,870.88x = 18,653,015.81
  5. Step 5: Solve for x
    x = 18,653,015.81/4,870.88
  6. Step 6: Final answer
    x = 3,829.50

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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.