Home / 1,947.40-2,681.20-1,814.92

Finding the Fourth Proportional to 1,947.40, 2,681.20 and 1,814.92

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Solution

The fourth proportional to 1,947.40, 2,681.20 and 1,814.92 is: 2,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,947.40 : 2,681.20 = 1,814.92 : x
  2. Step 2: Convert to fraction form
    1,947.40/2,681.20 = 1,814.92/x
  3. Step 3: Cross multiply
    1,947.40x = 2,681.20 × 1,814.92
  4. Step 4: Simplify right side
    1,947.40x = 4,866,163.50
  5. Step 5: Solve for x
    x = 4,866,163.50/1,947.40
  6. Step 6: Final answer
    x = 2,498.80

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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.