Home / 5,129.95-7,695.23-1,620.07

Finding the Fourth Proportional to 5,129.95, 7,695.23 and 1,620.07

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Solution

The fourth proportional to 5,129.95, 7,695.23 and 1,620.07 is: 2,430.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.95 : 7,695.23 = 1,620.07 : x
  2. Step 2: Convert to fraction form
    5,129.95/7,695.23 = 1,620.07/x
  3. Step 3: Cross multiply
    5,129.95x = 7,695.23 × 1,620.07
  4. Step 4: Simplify right side
    5,129.95x = 12,466,764.69
  5. Step 5: Solve for x
    x = 12,466,764.69/5,129.95
  6. Step 6: Final answer
    x = 2,430.19

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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.