Home / 7,538.20-11,307.30-5,205.40

Finding the Fourth Proportional to 7,538.20, 11,307.30 and 5,205.40

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Solution

The fourth proportional to 7,538.20, 11,307.30 and 5,205.40 is: 7,808.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,538.20 : 11,307.30 = 5,205.40 : x
  2. Step 2: Convert to fraction form
    7,538.20/11,307.30 = 5,205.40/x
  3. Step 3: Cross multiply
    7,538.20x = 11,307.30 × 5,205.40
  4. Step 4: Simplify right side
    7,538.20x = 58,859,019.42
  5. Step 5: Solve for x
    x = 58,859,019.42/7,538.20
  6. Step 6: Final answer
    x = 7,808.10

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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.