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Finding the Fourth Proportional to 7,410.80, 11,116.20 and 4,300.40

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Solution

The fourth proportional to 7,410.80, 11,116.20 and 4,300.40 is: 6,450.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,410.80 : 11,116.20 = 4,300.40 : x
  2. Step 2: Convert to fraction form
    7,410.80/11,116.20 = 4,300.40/x
  3. Step 3: Cross multiply
    7,410.80x = 11,116.20 × 4,300.40
  4. Step 4: Simplify right side
    7,410.80x = 47,804,106.48
  5. Step 5: Solve for x
    x = 47,804,106.48/7,410.80
  6. Step 6: Final answer
    x = 6,450.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.