Home / 7,621.02-10,521.99-6,821.82

Finding the Fourth Proportional to 7,621.02, 10,521.99 and 6,821.82

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Solution

The fourth proportional to 7,621.02, 10,521.99 and 6,821.82 is: 9,418.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.02 : 10,521.99 = 6,821.82 : x
  2. Step 2: Convert to fraction form
    7,621.02/10,521.99 = 6,821.82/x
  3. Step 3: Cross multiply
    7,621.02x = 10,521.99 × 6,821.82
  4. Step 4: Simplify right side
    7,621.02x = 71,779,121.82
  5. Step 5: Solve for x
    x = 71,779,121.82/7,621.02
  6. Step 6: Final answer
    x = 9,418.57

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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.