Home / 1,897.58-2,616.55-1,555.86

Finding the Fourth Proportional to 1,897.58, 2,616.55 and 1,555.86

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Solution

The fourth proportional to 1,897.58, 2,616.55 and 1,555.86 is: 2,145.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,897.58 : 2,616.55 = 1,555.86 : x
  2. Step 2: Convert to fraction form
    1,897.58/2,616.55 = 1,555.86/x
  3. Step 3: Cross multiply
    1,897.58x = 2,616.55 × 1,555.86
  4. Step 4: Simplify right side
    1,897.58x = 4,070,985.48
  5. Step 5: Solve for x
    x = 4,070,985.48/1,897.58
  6. Step 6: Final answer
    x = 2,145.36

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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.