Home / 3,483.40-4,805.70-2,156.20

Finding the Fourth Proportional to 3,483.40, 4,805.70 and 2,156.20

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Solution

The fourth proportional to 3,483.40, 4,805.70 and 2,156.20 is: 2,974.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,483.40 : 4,805.70 = 2,156.20 : x
  2. Step 2: Convert to fraction form
    3,483.40/4,805.70 = 2,156.20/x
  3. Step 3: Cross multiply
    3,483.40x = 4,805.70 × 2,156.20
  4. Step 4: Simplify right side
    3,483.40x = 10,362,050.34
  5. Step 5: Solve for x
    x = 10,362,050.34/3,483.40
  6. Step 6: Final answer
    x = 2,974.69

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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.