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Finding the Fourth Proportional to 7,000.90, 10,631 and 7,000.90

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Solution

The fourth proportional to 7,000.90, 10,631 and 7,000.90 is: 10,631

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,000.90 : 10,631 = 7,000.90 : x
  2. Step 2: Convert to fraction form
    7,000.90/10,631 = 7,000.90/x
  3. Step 3: Cross multiply
    7,000.90x = 10,631 × 7,000.90
  4. Step 4: Simplify right side
    7,000.90x = 74,426,567.90
  5. Step 5: Solve for x
    x = 74,426,567.90/7,000.90
  6. Step 6: Final answer
    x = 10,631

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.