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Finding the Fourth Proportional to 8,948.94, 12,349.12 and 4,970.30

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Solution

The fourth proportional to 8,948.94, 12,349.12 and 4,970.30 is: 6,858.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,948.94 : 12,349.12 = 4,970.30 : x
  2. Step 2: Convert to fraction form
    8,948.94/12,349.12 = 4,970.30/x
  3. Step 3: Cross multiply
    8,948.94x = 12,349.12 × 4,970.30
  4. Step 4: Simplify right side
    8,948.94x = 61,378,831.14
  5. Step 5: Solve for x
    x = 61,378,831.14/8,948.94
  6. Step 6: Final answer
    x = 6,858.78

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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.