Home / 2,211.40-3,317.08-1,053.64

Finding the Fourth Proportional to 2,211.40, 3,317.08 and 1,053.64

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Solution

The fourth proportional to 2,211.40, 3,317.08 and 1,053.64 is: 1,580.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,211.40 : 3,317.08 = 1,053.64 : x
  2. Step 2: Convert to fraction form
    2,211.40/3,317.08 = 1,053.64/x
  3. Step 3: Cross multiply
    2,211.40x = 3,317.08 × 1,053.64
  4. Step 4: Simplify right side
    2,211.40x = 3,495,008.17
  5. Step 5: Solve for x
    x = 3,495,008.17/2,211.40
  6. Step 6: Final answer
    x = 1,580.45

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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.