Home / 2,999.60-4,498.26-918.98

Finding the Fourth Proportional to 2,999.60, 4,498.26 and 918.98

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Solution

The fourth proportional to 2,999.60, 4,498.26 and 918.98 is: 1,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,999.60 : 4,498.26 = 918.98 : x
  2. Step 2: Convert to fraction form
    2,999.60/4,498.26 = 918.98/x
  3. Step 3: Cross multiply
    2,999.60x = 4,498.26 × 918.98
  4. Step 4: Simplify right side
    2,999.60x = 4,133,810.97
  5. Step 5: Solve for x
    x = 4,133,810.97/2,999.60
  6. Step 6: Final answer
    x = 1,378.12

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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.