Home / 7,405.98-11,111.20-4,285.28

Finding the Fourth Proportional to 7,405.98, 11,111.20 and 4,285.28

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Solution

The fourth proportional to 7,405.98, 11,111.20 and 4,285.28 is: 6,429.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.98 : 11,111.20 = 4,285.28 : x
  2. Step 2: Convert to fraction form
    7,405.98/11,111.20 = 4,285.28/x
  3. Step 3: Cross multiply
    7,405.98x = 11,111.20 × 4,285.28
  4. Step 4: Simplify right side
    7,405.98x = 47,614,603.14
  5. Step 5: Solve for x
    x = 47,614,603.14/7,405.98
  6. Step 6: Final answer
    x = 6,429.21

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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.