Home / 7,118.40-10,665.45-4,518.30

Finding the Fourth Proportional to 7,118.40, 10,665.45 and 4,518.30

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Solution

The fourth proportional to 7,118.40, 10,665.45 and 4,518.30 is: 6,769.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.40 : 10,665.45 = 4,518.30 : x
  2. Step 2: Convert to fraction form
    7,118.40/10,665.45 = 4,518.30/x
  3. Step 3: Cross multiply
    7,118.40x = 10,665.45 × 4,518.30
  4. Step 4: Simplify right side
    7,118.40x = 48,189,702.74
  5. Step 5: Solve for x
    x = 48,189,702.74/7,118.40
  6. Step 6: Final answer
    x = 6,769.74

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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.