Home / 7,238.12-9,988.80-4,051.32

Finding the Fourth Proportional to 7,238.12, 9,988.80 and 4,051.32

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Solution

The fourth proportional to 7,238.12, 9,988.80 and 4,051.32 is: 5,590.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,238.12 : 9,988.80 = 4,051.32 : x
  2. Step 2: Convert to fraction form
    7,238.12/9,988.80 = 4,051.32/x
  3. Step 3: Cross multiply
    7,238.12x = 9,988.80 × 4,051.32
  4. Step 4: Simplify right side
    7,238.12x = 40,467,825.22
  5. Step 5: Solve for x
    x = 40,467,825.22/7,238.12
  6. Step 6: Final answer
    x = 5,590.93

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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.