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Finding the Fourth Proportional to 7,876.53, 10,870.10 and 4,339.74

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Solution

The fourth proportional to 7,876.53, 10,870.10 and 4,339.74 is: 5,989.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,876.53 : 10,870.10 = 4,339.74 : x
  2. Step 2: Convert to fraction form
    7,876.53/10,870.10 = 4,339.74/x
  3. Step 3: Cross multiply
    7,876.53x = 10,870.10 × 4,339.74
  4. Step 4: Simplify right side
    7,876.53x = 47,173,386.08
  5. Step 5: Solve for x
    x = 47,173,386.08/7,876.53
  6. Step 6: Final answer
    x = 5,989.11

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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.