Home / 2,985.24-4,120.38-1,923.72

Finding the Fourth Proportional to 2,985.24, 4,120.38 and 1,923.72

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Solution

The fourth proportional to 2,985.24, 4,120.38 and 1,923.72 is: 2,655.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.24 : 4,120.38 = 1,923.72 : x
  2. Step 2: Convert to fraction form
    2,985.24/4,120.38 = 1,923.72/x
  3. Step 3: Cross multiply
    2,985.24x = 4,120.38 × 1,923.72
  4. Step 4: Simplify right side
    2,985.24x = 7,926,457.41
  5. Step 5: Solve for x
    x = 7,926,457.41/2,985.24
  6. Step 6: Final answer
    x = 2,655.22

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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.