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Finding the Fourth Proportional to 8,698.50, 12,004.74 and 4,972.50

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Solution

The fourth proportional to 8,698.50, 12,004.74 and 4,972.50 is: 6,862.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,698.50 : 12,004.74 = 4,972.50 : x
  2. Step 2: Convert to fraction form
    8,698.50/12,004.74 = 4,972.50/x
  3. Step 3: Cross multiply
    8,698.50x = 12,004.74 × 4,972.50
  4. Step 4: Simplify right side
    8,698.50x = 59,693,569.65
  5. Step 5: Solve for x
    x = 59,693,569.65/8,698.50
  6. Step 6: Final answer
    x = 6,862.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.