Home / 2,985.04-4,118.12-2,039.30

Finding the Fourth Proportional to 2,985.04, 4,118.12 and 2,039.30

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Solution

The fourth proportional to 2,985.04, 4,118.12 and 2,039.30 is: 2,813.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.04 : 4,118.12 = 2,039.30 : x
  2. Step 2: Convert to fraction form
    2,985.04/4,118.12 = 2,039.30/x
  3. Step 3: Cross multiply
    2,985.04x = 4,118.12 × 2,039.30
  4. Step 4: Simplify right side
    2,985.04x = 8,398,071.92
  5. Step 5: Solve for x
    x = 8,398,071.92/2,985.04
  6. Step 6: Final answer
    x = 2,813.39

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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.