Home / 3,621.44-5,430.08-1,312.32

Finding the Fourth Proportional to 3,621.44, 5,430.08 and 1,312.32

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Solution

The fourth proportional to 3,621.44, 5,430.08 and 1,312.32 is: 1,967.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,621.44 : 5,430.08 = 1,312.32 : x
  2. Step 2: Convert to fraction form
    3,621.44/5,430.08 = 1,312.32/x
  3. Step 3: Cross multiply
    3,621.44x = 5,430.08 × 1,312.32
  4. Step 4: Simplify right side
    3,621.44x = 7,126,002.59
  5. Step 5: Solve for x
    x = 7,126,002.59/3,621.44
  6. Step 6: Final answer
    x = 1,967.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.