Home / 1,573.40-2,357.70-1,328.60

Finding the Fourth Proportional to 1,573.40, 2,357.70 and 1,328.60

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Solution

The fourth proportional to 1,573.40, 2,357.70 and 1,328.60 is: 1,990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.40 : 2,357.70 = 1,328.60 : x
  2. Step 2: Convert to fraction form
    1,573.40/2,357.70 = 1,328.60/x
  3. Step 3: Cross multiply
    1,573.40x = 2,357.70 × 1,328.60
  4. Step 4: Simplify right side
    1,573.40x = 3,132,440.22
  5. Step 5: Solve for x
    x = 3,132,440.22/1,573.40
  6. Step 6: Final answer
    x = 1,990.87

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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.