Home / 4,890.90-7,336.86-1,428.18

Finding the Fourth Proportional to 4,890.90, 7,336.86 and 1,428.18

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Solution

The fourth proportional to 4,890.90, 7,336.86 and 1,428.18 is: 2,142.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.90 : 7,336.86 = 1,428.18 : x
  2. Step 2: Convert to fraction form
    4,890.90/7,336.86 = 1,428.18/x
  3. Step 3: Cross multiply
    4,890.90x = 7,336.86 × 1,428.18
  4. Step 4: Simplify right side
    4,890.90x = 10,478,356.71
  5. Step 5: Solve for x
    x = 10,478,356.71/4,890.90
  6. Step 6: Final answer
    x = 2,142.42

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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.