Home / 4,752.07-7,128.11-1,289.32

Finding the Fourth Proportional to 4,752.07, 7,128.11 and 1,289.32

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Solution

The fourth proportional to 4,752.07, 7,128.11 and 1,289.32 is: 1,933.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,752.07 : 7,128.11 = 1,289.32 : x
  2. Step 2: Convert to fraction form
    4,752.07/7,128.11 = 1,289.32/x
  3. Step 3: Cross multiply
    4,752.07x = 7,128.11 × 1,289.32
  4. Step 4: Simplify right side
    4,752.07x = 9,190,435.83
  5. Step 5: Solve for x
    x = 9,190,435.83/4,752.07
  6. Step 6: Final answer
    x = 1,933.98

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Similar ratio
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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.