Home / 2,629.18-3,624.90-2,155.36

Finding the Fourth Proportional to 2,629.18, 3,624.90 and 2,155.36

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Solution

The fourth proportional to 2,629.18, 3,624.90 and 2,155.36 is: 2,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,629.18 : 3,624.90 = 2,155.36 : x
  2. Step 2: Convert to fraction form
    2,629.18/3,624.90 = 2,155.36/x
  3. Step 3: Cross multiply
    2,629.18x = 3,624.90 × 2,155.36
  4. Step 4: Simplify right side
    2,629.18x = 7,812,964.46
  5. Step 5: Solve for x
    x = 7,812,964.46/2,629.18
  6. Step 6: Final answer
    x = 2,971.64

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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.