Home / 5,384.94-7,430.55-3,145.19

Finding the Fourth Proportional to 5,384.94, 7,430.55 and 3,145.19

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Solution

The fourth proportional to 5,384.94, 7,430.55 and 3,145.19 is: 4,339.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.94 : 7,430.55 = 3,145.19 : x
  2. Step 2: Convert to fraction form
    5,384.94/7,430.55 = 3,145.19/x
  3. Step 3: Cross multiply
    5,384.94x = 7,430.55 × 3,145.19
  4. Step 4: Simplify right side
    5,384.94x = 23,370,491.55
  5. Step 5: Solve for x
    x = 23,370,491.55/5,384.94
  6. Step 6: Final answer
    x = 4,339.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.