Home / 9,631-13,290.80-5,439.16

Finding the Fourth Proportional to 9,631, 13,290.80 and 5,439.16

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Solution

The fourth proportional to 9,631, 13,290.80 and 5,439.16 is: 7,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,631 : 13,290.80 = 5,439.16 : x
  2. Step 2: Convert to fraction form
    9,631/13,290.80 = 5,439.16/x
  3. Step 3: Cross multiply
    9,631x = 13,290.80 × 5,439.16
  4. Step 4: Simplify right side
    9,631x = 72,290,787.73
  5. Step 5: Solve for x
    x = 72,290,787.73/9,631
  6. Step 6: Final answer
    x = 7,506.05

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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.