Home / 4,890.80-6,749.12-2,900.16

Finding the Fourth Proportional to 4,890.80, 6,749.12 and 2,900.16

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Solution

The fourth proportional to 4,890.80, 6,749.12 and 2,900.16 is: 4,002.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,890.80 : 6,749.12 = 2,900.16 : x
  2. Step 2: Convert to fraction form
    4,890.80/6,749.12 = 2,900.16/x
  3. Step 3: Cross multiply
    4,890.80x = 6,749.12 × 2,900.16
  4. Step 4: Simplify right side
    4,890.80x = 19,573,513.36
  5. Step 5: Solve for x
    x = 19,573,513.36/4,890.80
  6. Step 6: Final answer
    x = 4,002.11

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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.