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Finding the Fourth Proportional to 2,807.47, 4,209.99 and 1,490.94

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Solution

The fourth proportional to 2,807.47, 4,209.99 and 1,490.94 is: 2,235.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,807.47 : 4,209.99 = 1,490.94 : x
  2. Step 2: Convert to fraction form
    2,807.47/4,209.99 = 1,490.94/x
  3. Step 3: Cross multiply
    2,807.47x = 4,209.99 × 1,490.94
  4. Step 4: Simplify right side
    2,807.47x = 6,276,813.99
  5. Step 5: Solve for x
    x = 6,276,813.99/2,807.47
  6. Step 6: Final answer
    x = 2,235.75

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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.