Home / 2,939.85-4,402.77-1,621.58

Finding the Fourth Proportional to 2,939.85, 4,402.77 and 1,621.58

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Solution

The fourth proportional to 2,939.85, 4,402.77 and 1,621.58 is: 2,428.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,939.85 : 4,402.77 = 1,621.58 : x
  2. Step 2: Convert to fraction form
    2,939.85/4,402.77 = 1,621.58/x
  3. Step 3: Cross multiply
    2,939.85x = 4,402.77 × 1,621.58
  4. Step 4: Simplify right side
    2,939.85x = 7,139,421.76
  5. Step 5: Solve for x
    x = 7,139,421.76/2,939.85
  6. Step 6: Final answer
    x = 2,428.50

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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.