Home / 2,990.10-4,125.57-1,810.94

Finding the Fourth Proportional to 2,990.10, 4,125.57 and 1,810.94

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Solution

The fourth proportional to 2,990.10, 4,125.57 and 1,810.94 is: 2,498.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,990.10 : 4,125.57 = 1,810.94 : x
  2. Step 2: Convert to fraction form
    2,990.10/4,125.57 = 1,810.94/x
  3. Step 3: Cross multiply
    2,990.10x = 4,125.57 × 1,810.94
  4. Step 4: Simplify right side
    2,990.10x = 7,471,159.74
  5. Step 5: Solve for x
    x = 7,471,159.74/2,990.10
  6. Step 6: Final answer
    x = 2,498.63

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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.