Home / 7,405.08-10,219.10-4,218.23

Finding the Fourth Proportional to 7,405.08, 10,219.10 and 4,218.23

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Solution

The fourth proportional to 7,405.08, 10,219.10 and 4,218.23 is: 5,821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.08 : 10,219.10 = 4,218.23 : x
  2. Step 2: Convert to fraction form
    7,405.08/10,219.10 = 4,218.23/x
  3. Step 3: Cross multiply
    7,405.08x = 10,219.10 × 4,218.23
  4. Step 4: Simplify right side
    7,405.08x = 43,106,442.01
  5. Step 5: Solve for x
    x = 43,106,442.01/7,405.08
  6. Step 6: Final answer
    x = 5,821.20

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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.