Home / 8,430.12-11,629.80-5,070.96

Finding the Fourth Proportional to 8,430.12, 11,629.80 and 5,070.96

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Solution

The fourth proportional to 8,430.12, 11,629.80 and 5,070.96 is: 6,995.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.12 : 11,629.80 = 5,070.96 : x
  2. Step 2: Convert to fraction form
    8,430.12/11,629.80 = 5,070.96/x
  3. Step 3: Cross multiply
    8,430.12x = 11,629.80 × 5,070.96
  4. Step 4: Simplify right side
    8,430.12x = 58,974,250.61
  5. Step 5: Solve for x
    x = 58,974,250.61/8,430.12
  6. Step 6: Final answer
    x = 6,995.66

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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.