Home / 7,878.07-10,871.76-4,341.20

Finding the Fourth Proportional to 7,878.07, 10,871.76 and 4,341.20

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Solution

The fourth proportional to 7,878.07, 10,871.76 and 4,341.20 is: 5,990.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,878.07 : 10,871.76 = 4,341.20 : x
  2. Step 2: Convert to fraction form
    7,878.07/10,871.76 = 4,341.20/x
  3. Step 3: Cross multiply
    7,878.07x = 10,871.76 × 4,341.20
  4. Step 4: Simplify right side
    7,878.07x = 47,196,484.51
  5. Step 5: Solve for x
    x = 47,196,484.51/7,878.07
  6. Step 6: Final answer
    x = 5,990.87

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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.