Home / 7,622.95-10,521.31-4,639.75

Finding the Fourth Proportional to 7,622.95, 10,521.31 and 4,639.75

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Solution

The fourth proportional to 7,622.95, 10,521.31 and 4,639.75 is: 6,403.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,622.95 : 10,521.31 = 4,639.75 : x
  2. Step 2: Convert to fraction form
    7,622.95/10,521.31 = 4,639.75/x
  3. Step 3: Cross multiply
    7,622.95x = 10,521.31 × 4,639.75
  4. Step 4: Simplify right side
    7,622.95x = 48,816,248.07
  5. Step 5: Solve for x
    x = 48,816,248.07/7,622.95
  6. Step 6: Final answer
    x = 6,403.85

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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.