Home / 8,428.87-11,631.96-4,652.21

Finding the Fourth Proportional to 8,428.87, 11,631.96 and 4,652.21

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Solution

The fourth proportional to 8,428.87, 11,631.96 and 4,652.21 is: 6,420.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.87 : 11,631.96 = 4,652.21 : x
  2. Step 2: Convert to fraction form
    8,428.87/11,631.96 = 4,652.21/x
  3. Step 3: Cross multiply
    8,428.87x = 11,631.96 × 4,652.21
  4. Step 4: Simplify right side
    8,428.87x = 54,114,349.71
  5. Step 5: Solve for x
    x = 54,114,349.71/8,428.87
  6. Step 6: Final answer
    x = 6,420.12

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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.