Home / 8,420.81-11,621.50-4,836.26

Finding the Fourth Proportional to 8,420.81, 11,621.50 and 4,836.26

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Solution

The fourth proportional to 8,420.81, 11,621.50 and 4,836.26 is: 6,674.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.81 : 11,621.50 = 4,836.26 : x
  2. Step 2: Convert to fraction form
    8,420.81/11,621.50 = 4,836.26/x
  3. Step 3: Cross multiply
    8,420.81x = 11,621.50 × 4,836.26
  4. Step 4: Simplify right side
    8,420.81x = 56,204,595.59
  5. Step 5: Solve for x
    x = 56,204,595.59/8,420.81
  6. Step 6: Final answer
    x = 6,674.49

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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.