Home / 6,875.20-10,312.80-4,283.20

Finding the Fourth Proportional to 6,875.20, 10,312.80 and 4,283.20

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Solution

The fourth proportional to 6,875.20, 10,312.80 and 4,283.20 is: 6,424.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,875.20 : 10,312.80 = 4,283.20 : x
  2. Step 2: Convert to fraction form
    6,875.20/10,312.80 = 4,283.20/x
  3. Step 3: Cross multiply
    6,875.20x = 10,312.80 × 4,283.20
  4. Step 4: Simplify right side
    6,875.20x = 44,171,784.96
  5. Step 5: Solve for x
    x = 44,171,784.96/6,875.20
  6. Step 6: Final answer
    x = 6,424.80

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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.