Home / 5,378.55-7,420.59-3,020.19

Finding the Fourth Proportional to 5,378.55, 7,420.59 and 3,020.19

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Solution

The fourth proportional to 5,378.55, 7,420.59 and 3,020.19 is: 4,166.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.55 : 7,420.59 = 3,020.19 : x
  2. Step 2: Convert to fraction form
    5,378.55/7,420.59 = 3,020.19/x
  3. Step 3: Cross multiply
    5,378.55x = 7,420.59 × 3,020.19
  4. Step 4: Simplify right side
    5,378.55x = 22,411,591.71
  5. Step 5: Solve for x
    x = 22,411,591.71/5,378.55
  6. Step 6: Final answer
    x = 4,166.85

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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.