Home / 2,820.01-4,230.12-971.11

Finding the Fourth Proportional to 2,820.01, 4,230.12 and 971.11

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Solution

The fourth proportional to 2,820.01, 4,230.12 and 971.11 is: 1,456.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.01 : 4,230.12 = 971.11 : x
  2. Step 2: Convert to fraction form
    2,820.01/4,230.12 = 971.11/x
  3. Step 3: Cross multiply
    2,820.01x = 4,230.12 × 971.11
  4. Step 4: Simplify right side
    2,820.01x = 4,107,911.83
  5. Step 5: Solve for x
    x = 4,107,911.83/2,820.01
  6. Step 6: Final answer
    x = 1,456.70

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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.