Home / 1,335.60-2,000.30-1,289.46

Finding the Fourth Proportional to 1,335.60, 2,000.30 and 1,289.46

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Solution

The fourth proportional to 1,335.60, 2,000.30 and 1,289.46 is: 1,931.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,335.60 : 2,000.30 = 1,289.46 : x
  2. Step 2: Convert to fraction form
    1,335.60/2,000.30 = 1,289.46/x
  3. Step 3: Cross multiply
    1,335.60x = 2,000.30 × 1,289.46
  4. Step 4: Simplify right side
    1,335.60x = 2,579,306.84
  5. Step 5: Solve for x
    x = 2,579,306.84/1,335.60
  6. Step 6: Final answer
    x = 1,931.20

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1.5x scale

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.