Home / 1,573.38-2,172.60-984.90

Finding the Fourth Proportional to 1,573.38, 2,172.60 and 984.90

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Solution

The fourth proportional to 1,573.38, 2,172.60 and 984.90 is: 1,360.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.38 : 2,172.60 = 984.90 : x
  2. Step 2: Convert to fraction form
    1,573.38/2,172.60 = 984.90/x
  3. Step 3: Cross multiply
    1,573.38x = 2,172.60 × 984.90
  4. Step 4: Simplify right side
    1,573.38x = 2,139,793.74
  5. Step 5: Solve for x
    x = 2,139,793.74/1,573.38
  6. Step 6: Final answer
    x = 1,360.00

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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.