Home / 7,855.62-10,838.02-4,870.36

Finding the Fourth Proportional to 7,855.62, 10,838.02 and 4,870.36

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Solution

The fourth proportional to 7,855.62, 10,838.02 and 4,870.36 is: 6,719.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.62 : 10,838.02 = 4,870.36 : x
  2. Step 2: Convert to fraction form
    7,855.62/10,838.02 = 4,870.36/x
  3. Step 3: Cross multiply
    7,855.62x = 10,838.02 × 4,870.36
  4. Step 4: Simplify right side
    7,855.62x = 52,785,059.09
  5. Step 5: Solve for x
    x = 52,785,059.09/7,855.62
  6. Step 6: Final answer
    x = 6,719.40

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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.