Home / 6,510-8,985.20-4,151.60

Finding the Fourth Proportional to 6,510, 8,985.20 and 4,151.60

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Solution

The fourth proportional to 6,510, 8,985.20 and 4,151.60 is: 5,730.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,510 : 8,985.20 = 4,151.60 : x
  2. Step 2: Convert to fraction form
    6,510/8,985.20 = 4,151.60/x
  3. Step 3: Cross multiply
    6,510x = 8,985.20 × 4,151.60
  4. Step 4: Simplify right side
    6,510x = 37,302,956.32
  5. Step 5: Solve for x
    x = 37,302,956.32/6,510
  6. Step 6: Final answer
    x = 5,730.10

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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.