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Finding the Fourth Proportional to 7,134.90, 9,848.40 and 4,899.90

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Solution

The fourth proportional to 7,134.90, 9,848.40 and 4,899.90 is: 6,763.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,134.90 : 9,848.40 = 4,899.90 : x
  2. Step 2: Convert to fraction form
    7,134.90/9,848.40 = 4,899.90/x
  3. Step 3: Cross multiply
    7,134.90x = 9,848.40 × 4,899.90
  4. Step 4: Simplify right side
    7,134.90x = 48,256,175.16
  5. Step 5: Solve for x
    x = 48,256,175.16/7,134.90
  6. Step 6: Final answer
    x = 6,763.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.