Home / 5,386.14-8,078.99-1,490.45

Finding the Fourth Proportional to 5,386.14, 8,078.99 and 1,490.45

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Solution

The fourth proportional to 5,386.14, 8,078.99 and 1,490.45 is: 2,235.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.14 : 8,078.99 = 1,490.45 : x
  2. Step 2: Convert to fraction form
    5,386.14/8,078.99 = 1,490.45/x
  3. Step 3: Cross multiply
    5,386.14x = 8,078.99 × 1,490.45
  4. Step 4: Simplify right side
    5,386.14x = 12,041,282.80
  5. Step 5: Solve for x
    x = 12,041,282.80/5,386.14
  6. Step 6: Final answer
    x = 2,235.61

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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.