Home / 5,285.19-7,921.85-2,509.59

Finding the Fourth Proportional to 5,285.19, 7,921.85 and 2,509.59

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Solution

The fourth proportional to 5,285.19, 7,921.85 and 2,509.59 is: 3,761.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.19 : 7,921.85 = 2,509.59 : x
  2. Step 2: Convert to fraction form
    5,285.19/7,921.85 = 2,509.59/x
  3. Step 3: Cross multiply
    5,285.19x = 7,921.85 × 2,509.59
  4. Step 4: Simplify right side
    5,285.19x = 19,880,582.99
  5. Step 5: Solve for x
    x = 19,880,582.99/5,285.19
  6. Step 6: Final answer
    x = 3,761.56

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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.