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Finding the Fourth Proportional to 4,875.60, 6,838.80 and 4,875.60

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Solution

The fourth proportional to 4,875.60, 6,838.80 and 4,875.60 is: 6,838.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,875.60 : 6,838.80 = 4,875.60 : x
  2. Step 2: Convert to fraction form
    4,875.60/6,838.80 = 4,875.60/x
  3. Step 3: Cross multiply
    4,875.60x = 6,838.80 × 4,875.60
  4. Step 4: Simplify right side
    4,875.60x = 33,343,253.28
  5. Step 5: Solve for x
    x = 33,343,253.28/4,875.60
  6. Step 6: Final answer
    x = 6,838.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.