Home / 2,875.40-4,313.10-1,765.70

Finding the Fourth Proportional to 2,875.40, 4,313.10 and 1,765.70

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Solution

The fourth proportional to 2,875.40, 4,313.10 and 1,765.70 is: 2,648.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.40 : 4,313.10 = 1,765.70 : x
  2. Step 2: Convert to fraction form
    2,875.40/4,313.10 = 1,765.70/x
  3. Step 3: Cross multiply
    2,875.40x = 4,313.10 × 1,765.70
  4. Step 4: Simplify right side
    2,875.40x = 7,615,640.67
  5. Step 5: Solve for x
    x = 7,615,640.67/2,875.40
  6. Step 6: Final answer
    x = 2,648.55

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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.