Home / 9,621.90-13,281.50-5,641.56

Finding the Fourth Proportional to 9,621.90, 13,281.50 and 5,641.56

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Solution

The fourth proportional to 9,621.90, 13,281.50 and 5,641.56 is: 7,787.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,621.90 : 13,281.50 = 5,641.56 : x
  2. Step 2: Convert to fraction form
    9,621.90/13,281.50 = 5,641.56/x
  3. Step 3: Cross multiply
    9,621.90x = 13,281.50 × 5,641.56
  4. Step 4: Simplify right side
    9,621.90x = 74,928,379.14
  5. Step 5: Solve for x
    x = 74,928,379.14/9,621.90
  6. Step 6: Final answer
    x = 7,787.27

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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.