Home / 7,405.36-10,219.23-4,130.79

Finding the Fourth Proportional to 7,405.36, 10,219.23 and 4,130.79

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Solution

The fourth proportional to 7,405.36, 10,219.23 and 4,130.79 is: 5,700.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.36 : 10,219.23 = 4,130.79 : x
  2. Step 2: Convert to fraction form
    7,405.36/10,219.23 = 4,130.79/x
  3. Step 3: Cross multiply
    7,405.36x = 10,219.23 × 4,130.79
  4. Step 4: Simplify right side
    7,405.36x = 42,213,493.09
  5. Step 5: Solve for x
    x = 42,213,493.09/7,405.36
  6. Step 6: Final answer
    x = 5,700.40

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Half scale
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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.