Home / 2,909.63-4,015.40-1,667.87

Finding the Fourth Proportional to 2,909.63, 4,015.40 and 1,667.87

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Solution

The fourth proportional to 2,909.63, 4,015.40 and 1,667.87 is: 2,301.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.63 : 4,015.40 = 1,667.87 : x
  2. Step 2: Convert to fraction form
    2,909.63/4,015.40 = 1,667.87/x
  3. Step 3: Cross multiply
    2,909.63x = 4,015.40 × 1,667.87
  4. Step 4: Simplify right side
    2,909.63x = 6,697,165.20
  5. Step 5: Solve for x
    x = 6,697,165.20/2,909.63
  6. Step 6: Final answer
    x = 2,301.72

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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.