Home / 5,130.37-7,695.56-1,620.74

Finding the Fourth Proportional to 5,130.37, 7,695.56 and 1,620.74

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Solution

The fourth proportional to 5,130.37, 7,695.56 and 1,620.74 is: 2,431.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,130.37 : 7,695.56 = 1,620.74 : x
  2. Step 2: Convert to fraction form
    5,130.37/7,695.56 = 1,620.74/x
  3. Step 3: Cross multiply
    5,130.37x = 7,695.56 × 1,620.74
  4. Step 4: Simplify right side
    5,130.37x = 12,472,501.91
  5. Step 5: Solve for x
    x = 12,472,501.91/5,130.37
  6. Step 6: Final answer
    x = 2,431.11

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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.