Home / 5,113.76-7,056.64-2,875.86

Finding the Fourth Proportional to 5,113.76, 7,056.64 and 2,875.86

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Solution

The fourth proportional to 5,113.76, 7,056.64 and 2,875.86 is: 3,968.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.76 : 7,056.64 = 2,875.86 : x
  2. Step 2: Convert to fraction form
    5,113.76/7,056.64 = 2,875.86/x
  3. Step 3: Cross multiply
    5,113.76x = 7,056.64 × 2,875.86
  4. Step 4: Simplify right side
    5,113.76x = 20,293,908.71
  5. Step 5: Solve for x
    x = 20,293,908.71/5,113.76
  6. Step 6: Final answer
    x = 3,968.49

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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.