Home / 7,478.04-10,319.97-4,120.99

Finding the Fourth Proportional to 7,478.04, 10,319.97 and 4,120.99

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Solution

The fourth proportional to 7,478.04, 10,319.97 and 4,120.99 is: 5,687.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.04 : 10,319.97 = 4,120.99 : x
  2. Step 2: Convert to fraction form
    7,478.04/10,319.97 = 4,120.99/x
  3. Step 3: Cross multiply
    7,478.04x = 10,319.97 × 4,120.99
  4. Step 4: Simplify right side
    7,478.04x = 42,528,493.17
  5. Step 5: Solve for x
    x = 42,528,493.17/7,478.04
  6. Step 6: Final answer
    x = 5,687.12

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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.