Home / 8,690.05-13,040.57-4,999.51

Finding the Fourth Proportional to 8,690.05, 13,040.57 and 4,999.51

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Solution

The fourth proportional to 8,690.05, 13,040.57 and 4,999.51 is: 7,502.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.05 : 13,040.57 = 4,999.51 : x
  2. Step 2: Convert to fraction form
    8,690.05/13,040.57 = 4,999.51/x
  3. Step 3: Cross multiply
    8,690.05x = 13,040.57 × 4,999.51
  4. Step 4: Simplify right side
    8,690.05x = 65,196,460.12
  5. Step 5: Solve for x
    x = 65,196,460.12/8,690.05
  6. Step 6: Final answer
    x = 7,502.43

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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.