Home / 7,406.20-11,109.30-4,641.40

Finding the Fourth Proportional to 7,406.20, 11,109.30 and 4,641.40

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Solution

The fourth proportional to 7,406.20, 11,109.30 and 4,641.40 is: 6,962.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,406.20 : 11,109.30 = 4,641.40 : x
  2. Step 2: Convert to fraction form
    7,406.20/11,109.30 = 4,641.40/x
  3. Step 3: Cross multiply
    7,406.20x = 11,109.30 × 4,641.40
  4. Step 4: Simplify right side
    7,406.20x = 51,562,705.02
  5. Step 5: Solve for x
    x = 51,562,705.02/7,406.20
  6. Step 6: Final answer
    x = 6,962.10

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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.