Home / 1,573.18-2,170.88-1,200.40

Finding the Fourth Proportional to 1,573.18, 2,170.88 and 1,200.40

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Solution

The fourth proportional to 1,573.18, 2,170.88 and 1,200.40 is: 1,656.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,573.18 : 2,170.88 = 1,200.40 : x
  2. Step 2: Convert to fraction form
    1,573.18/2,170.88 = 1,200.40/x
  3. Step 3: Cross multiply
    1,573.18x = 2,170.88 × 1,200.40
  4. Step 4: Simplify right side
    1,573.18x = 2,605,924.35
  5. Step 5: Solve for x
    x = 2,605,924.35/1,573.18
  6. Step 6: Final answer
    x = 1,656.47

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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.