Home / 7,621.97-10,521.63-4,638.74

Finding the Fourth Proportional to 7,621.97, 10,521.63 and 4,638.74

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Solution

The fourth proportional to 7,621.97, 10,521.63 and 4,638.74 is: 6,403.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,621.97 : 10,521.63 = 4,638.74 : x
  2. Step 2: Convert to fraction form
    7,621.97/10,521.63 = 4,638.74/x
  3. Step 3: Cross multiply
    7,621.97x = 10,521.63 × 4,638.74
  4. Step 4: Simplify right side
    7,621.97x = 48,807,053.34
  5. Step 5: Solve for x
    x = 48,807,053.34/7,621.97
  6. Step 6: Final answer
    x = 6,403.47

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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.