Home / 7,420.86-10,240.81-4,017.91

Finding the Fourth Proportional to 7,420.86, 10,240.81 and 4,017.91

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Solution

The fourth proportional to 7,420.86, 10,240.81 and 4,017.91 is: 5,544.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,420.86 : 10,240.81 = 4,017.91 : x
  2. Step 2: Convert to fraction form
    7,420.86/10,240.81 = 4,017.91/x
  3. Step 3: Cross multiply
    7,420.86x = 10,240.81 × 4,017.91
  4. Step 4: Simplify right side
    7,420.86x = 41,146,581.61
  5. Step 5: Solve for x
    x = 41,146,581.61/7,420.86
  6. Step 6: Final answer
    x = 5,544.72

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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.