Home / 7,378.04-10,181.40-4,020.78

Finding the Fourth Proportional to 7,378.04, 10,181.40 and 4,020.78

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Solution

The fourth proportional to 7,378.04, 10,181.40 and 4,020.78 is: 5,548.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,378.04 : 10,181.40 = 4,020.78 : x
  2. Step 2: Convert to fraction form
    7,378.04/10,181.40 = 4,020.78/x
  3. Step 3: Cross multiply
    7,378.04x = 10,181.40 × 4,020.78
  4. Step 4: Simplify right side
    7,378.04x = 40,937,210.88
  5. Step 5: Solve for x
    x = 40,937,210.88/7,378.04
  6. Step 6: Final answer
    x = 5,548.52

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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.