Home / 1,931.12-2,889.96-1,580.40

Finding the Fourth Proportional to 1,931.12, 2,889.96 and 1,580.40

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Solution

The fourth proportional to 1,931.12, 2,889.96 and 1,580.40 is: 2,365.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,931.12 : 2,889.96 = 1,580.40 : x
  2. Step 2: Convert to fraction form
    1,931.12/2,889.96 = 1,580.40/x
  3. Step 3: Cross multiply
    1,931.12x = 2,889.96 × 1,580.40
  4. Step 4: Simplify right side
    1,931.12x = 4,567,292.78
  5. Step 5: Solve for x
    x = 4,567,292.78/1,931.12
  6. Step 6: Final answer
    x = 2,365.10

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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.