Home / 7,631.20-10,584.04-7,485.40

Finding the Fourth Proportional to 7,631.20, 10,584.04 and 7,485.40

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Solution

The fourth proportional to 7,631.20, 10,584.04 and 7,485.40 is: 10,381.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,631.20 : 10,584.04 = 7,485.40 : x
  2. Step 2: Convert to fraction form
    7,631.20/10,584.04 = 7,485.40/x
  3. Step 3: Cross multiply
    7,631.20x = 10,584.04 × 7,485.40
  4. Step 4: Simplify right side
    7,631.20x = 79,225,773.02
  5. Step 5: Solve for x
    x = 79,225,773.02/7,631.20
  6. Step 6: Final answer
    x = 10,381.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.