Home / 7,420.20-10,237.77-4,275.78

Finding the Fourth Proportional to 7,420.20, 10,237.77 and 4,275.78

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Solution

The fourth proportional to 7,420.20, 10,237.77 and 4,275.78 is: 5,899.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.20 : 10,237.77 = 4,275.78 : x
  2. Step 2: Convert to fraction form
    7,420.20/10,237.77 = 4,275.78/x
  3. Step 3: Cross multiply
    7,420.20x = 10,237.77 × 4,275.78
  4. Step 4: Simplify right side
    7,420.20x = 43,774,452.21
  5. Step 5: Solve for x
    x = 43,774,452.21/7,420.20
  6. Step 6: Final answer
    x = 5,899.36

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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.