Home / 7,985.15-11,019.49-4,629.91

Finding the Fourth Proportional to 7,985.15, 11,019.49 and 4,629.91

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Solution

The fourth proportional to 7,985.15, 11,019.49 and 4,629.91 is: 6,389.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.15 : 11,019.49 = 4,629.91 : x
  2. Step 2: Convert to fraction form
    7,985.15/11,019.49 = 4,629.91/x
  3. Step 3: Cross multiply
    7,985.15x = 11,019.49 × 4,629.91
  4. Step 4: Simplify right side
    7,985.15x = 51,019,191.85
  5. Step 5: Solve for x
    x = 51,019,191.85/7,985.15
  6. Step 6: Final answer
    x = 6,389.26

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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.