Home / 7,478.99-10,320.95-4,121.94

Finding the Fourth Proportional to 7,478.99, 10,320.95 and 4,121.94

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Solution

The fourth proportional to 7,478.99, 10,320.95 and 4,121.94 is: 5,688.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.99 : 10,320.95 = 4,121.94 : x
  2. Step 2: Convert to fraction form
    7,478.99/10,320.95 = 4,121.94/x
  3. Step 3: Cross multiply
    7,478.99x = 10,320.95 × 4,121.94
  4. Step 4: Simplify right side
    7,478.99x = 42,542,316.03
  5. Step 5: Solve for x
    x = 42,542,316.03/7,478.99
  6. Step 6: Final answer
    x = 5,688.25

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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.