Home / 2,985.05-4,477.60-1,890.18

Finding the Fourth Proportional to 2,985.05, 4,477.60 and 1,890.18

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Solution

The fourth proportional to 2,985.05, 4,477.60 and 1,890.18 is: 2,835.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.05 : 4,477.60 = 1,890.18 : x
  2. Step 2: Convert to fraction form
    2,985.05/4,477.60 = 1,890.18/x
  3. Step 3: Cross multiply
    2,985.05x = 4,477.60 × 1,890.18
  4. Step 4: Simplify right side
    2,985.05x = 8,463,472.33
  5. Step 5: Solve for x
    x = 8,463,472.33/2,985.05
  6. Step 6: Final answer
    x = 2,835.28

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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.