Home / 7,420.95-11,131.56-3,471.12

Finding the Fourth Proportional to 7,420.95, 11,131.56 and 3,471.12

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Solution

The fourth proportional to 7,420.95, 11,131.56 and 3,471.12 is: 5,206.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.95 : 11,131.56 = 3,471.12 : x
  2. Step 2: Convert to fraction form
    7,420.95/11,131.56 = 3,471.12/x
  3. Step 3: Cross multiply
    7,420.95x = 11,131.56 × 3,471.12
  4. Step 4: Simplify right side
    7,420.95x = 38,638,980.55
  5. Step 5: Solve for x
    x = 38,638,980.55/7,420.95
  6. Step 6: Final answer
    x = 5,206.74

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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.