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Finding the Fourth Proportional to 7,281.06, 10,047.88 and 3,969.06

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Solution

The fourth proportional to 7,281.06, 10,047.88 and 3,969.06 is: 5,477.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,281.06 : 10,047.88 = 3,969.06 : x
  2. Step 2: Convert to fraction form
    7,281.06/10,047.88 = 3,969.06/x
  3. Step 3: Cross multiply
    7,281.06x = 10,047.88 × 3,969.06
  4. Step 4: Simplify right side
    7,281.06x = 39,880,638.59
  5. Step 5: Solve for x
    x = 39,880,638.59/7,281.06
  6. Step 6: Final answer
    x = 5,477.31

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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.