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Finding the Fourth Proportional to 12,807.60, 19,222.20 and 5,798.40

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Solution

The fourth proportional to 12,807.60, 19,222.20 and 5,798.40 is: 8,702.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,807.60 : 19,222.20 = 5,798.40 : x
  2. Step 2: Convert to fraction form
    12,807.60/19,222.20 = 5,798.40/x
  3. Step 3: Cross multiply
    12,807.60x = 19,222.20 × 5,798.40
  4. Step 4: Simplify right side
    12,807.60x = 111,458,004.48
  5. Step 5: Solve for x
    x = 111,458,004.48/12,807.60
  6. Step 6: Final answer
    x = 8,702.49

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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.