Home / 2,875.06-4,312.68-1,720

Finding the Fourth Proportional to 2,875.06, 4,312.68 and 1,720

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Solution

The fourth proportional to 2,875.06, 4,312.68 and 1,720 is: 2,580.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.06 : 4,312.68 = 1,720 : x
  2. Step 2: Convert to fraction form
    2,875.06/4,312.68 = 1,720/x
  3. Step 3: Cross multiply
    2,875.06x = 4,312.68 × 1,720
  4. Step 4: Simplify right side
    2,875.06x = 7,417,809.60
  5. Step 5: Solve for x
    x = 7,417,809.60/2,875.06
  6. Step 6: Final answer
    x = 2,580.05

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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.