Home / 5,113.68-7,055.28-2,875.20

Finding the Fourth Proportional to 5,113.68, 7,055.28 and 2,875.20

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Solution

The fourth proportional to 5,113.68, 7,055.28 and 2,875.20 is: 3,966.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.68 : 7,055.28 = 2,875.20 : x
  2. Step 2: Convert to fraction form
    5,113.68/7,055.28 = 2,875.20/x
  3. Step 3: Cross multiply
    5,113.68x = 7,055.28 × 2,875.20
  4. Step 4: Simplify right side
    5,113.68x = 20,285,341.06
  5. Step 5: Solve for x
    x = 20,285,341.06/5,113.68
  6. Step 6: Final answer
    x = 3,966.88

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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.