Home / 4,509.94-6,765.56-1,390.21

Finding the Fourth Proportional to 4,509.94, 6,765.56 and 1,390.21

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Solution

The fourth proportional to 4,509.94, 6,765.56 and 1,390.21 is: 2,085.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,509.94 : 6,765.56 = 1,390.21 : x
  2. Step 2: Convert to fraction form
    4,509.94/6,765.56 = 1,390.21/x
  3. Step 3: Cross multiply
    4,509.94x = 6,765.56 × 1,390.21
  4. Step 4: Simplify right side
    4,509.94x = 9,405,549.17
  5. Step 5: Solve for x
    x = 9,405,549.17/4,509.94
  6. Step 6: Final answer
    x = 2,085.52

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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.