Home / 1,864.95-2,795.55-1,431.20

Finding the Fourth Proportional to 1,864.95, 2,795.55 and 1,431.20

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Solution

The fourth proportional to 1,864.95, 2,795.55 and 1,431.20 is: 2,145.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,864.95 : 2,795.55 = 1,431.20 : x
  2. Step 2: Convert to fraction form
    1,864.95/2,795.55 = 1,431.20/x
  3. Step 3: Cross multiply
    1,864.95x = 2,795.55 × 1,431.20
  4. Step 4: Simplify right side
    1,864.95x = 4,000,977.18
  5. Step 5: Solve for x
    x = 4,000,977.18/1,864.95
  6. Step 6: Final answer
    x = 2,145.35

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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.