Home / 2,122.45-2,930.40-1,624.19

Finding the Fourth Proportional to 2,122.45, 2,930.40 and 1,624.19

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Solution

The fourth proportional to 2,122.45, 2,930.40 and 1,624.19 is: 2,242.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.45 : 2,930.40 = 1,624.19 : x
  2. Step 2: Convert to fraction form
    2,122.45/2,930.40 = 1,624.19/x
  3. Step 3: Cross multiply
    2,122.45x = 2,930.40 × 1,624.19
  4. Step 4: Simplify right side
    2,122.45x = 4,759,533.70
  5. Step 5: Solve for x
    x = 4,759,533.70/2,122.45
  6. Step 6: Final answer
    x = 2,242.47

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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.