Home / 2,118.81-2,925.88-1,374.02

Finding the Fourth Proportional to 2,118.81, 2,925.88 and 1,374.02

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Solution

The fourth proportional to 2,118.81, 2,925.88 and 1,374.02 is: 1,897.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.81 : 2,925.88 = 1,374.02 : x
  2. Step 2: Convert to fraction form
    2,118.81/2,925.88 = 1,374.02/x
  3. Step 3: Cross multiply
    2,118.81x = 2,925.88 × 1,374.02
  4. Step 4: Simplify right side
    2,118.81x = 4,020,217.64
  5. Step 5: Solve for x
    x = 4,020,217.64/2,118.81
  6. Step 6: Final answer
    x = 1,897.39

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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.