Home / 2,154.15-2,972.65-1,316.26

Finding the Fourth Proportional to 2,154.15, 2,972.65 and 1,316.26

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Solution

The fourth proportional to 2,154.15, 2,972.65 and 1,316.26 is: 1,816.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.15 : 2,972.65 = 1,316.26 : x
  2. Step 2: Convert to fraction form
    2,154.15/2,972.65 = 1,316.26/x
  3. Step 3: Cross multiply
    2,154.15x = 2,972.65 × 1,316.26
  4. Step 4: Simplify right side
    2,154.15x = 3,912,774.82
  5. Step 5: Solve for x
    x = 3,912,774.82/2,154.15
  6. Step 6: Final answer
    x = 1,816.39

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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.