Home / 7,420.72-10,240.68-4,627.84

Finding the Fourth Proportional to 7,420.72, 10,240.68 and 4,627.84

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Solution

The fourth proportional to 7,420.72, 10,240.68 and 4,627.84 is: 6,386.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.72 : 10,240.68 = 4,627.84 : x
  2. Step 2: Convert to fraction form
    7,420.72/10,240.68 = 4,627.84/x
  3. Step 3: Cross multiply
    7,420.72x = 10,240.68 × 4,627.84
  4. Step 4: Simplify right side
    7,420.72x = 47,392,228.53
  5. Step 5: Solve for x
    x = 47,392,228.53/7,420.72
  6. Step 6: Final answer
    x = 6,386.47

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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.