Home / 2,909.64-4,366.02-1,870.20

Finding the Fourth Proportional to 2,909.64, 4,366.02 and 1,870.20

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Solution

The fourth proportional to 2,909.64, 4,366.02 and 1,870.20 is: 2,806.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.64 : 4,366.02 = 1,870.20 : x
  2. Step 2: Convert to fraction form
    2,909.64/4,366.02 = 1,870.20/x
  3. Step 3: Cross multiply
    2,909.64x = 4,366.02 × 1,870.20
  4. Step 4: Simplify right side
    2,909.64x = 8,165,330.60
  5. Step 5: Solve for x
    x = 8,165,330.60/2,909.64
  6. Step 6: Final answer
    x = 2,806.30

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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.