Home / 8,521.20-11,756.96-4,985.28

Finding the Fourth Proportional to 8,521.20, 11,756.96 and 4,985.28

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Solution

The fourth proportional to 8,521.20, 11,756.96 and 4,985.28 is: 6,878.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.20 : 11,756.96 = 4,985.28 : x
  2. Step 2: Convert to fraction form
    8,521.20/11,756.96 = 4,985.28/x
  3. Step 3: Cross multiply
    8,521.20x = 11,756.96 × 4,985.28
  4. Step 4: Simplify right side
    8,521.20x = 58,611,737.55
  5. Step 5: Solve for x
    x = 58,611,737.55/8,521.20
  6. Step 6: Final answer
    x = 6,878.34

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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.