Home / 2,140.29-2,953.26-1,355.40

Finding the Fourth Proportional to 2,140.29, 2,953.26 and 1,355.40

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Solution

The fourth proportional to 2,140.29, 2,953.26 and 1,355.40 is: 1,870.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,140.29 : 2,953.26 = 1,355.40 : x
  2. Step 2: Convert to fraction form
    2,140.29/2,953.26 = 1,355.40/x
  3. Step 3: Cross multiply
    2,140.29x = 2,953.26 × 1,355.40
  4. Step 4: Simplify right side
    2,140.29x = 4,002,848.60
  5. Step 5: Solve for x
    x = 4,002,848.60/2,140.29
  6. Step 6: Final answer
    x = 1,870.24

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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.