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Finding the Fourth Proportional to 7,858.16, 10,848.89 and 4,875.64

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Solution

The fourth proportional to 7,858.16, 10,848.89 and 4,875.64 is: 6,731.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,858.16 : 10,848.89 = 4,875.64 : x
  2. Step 2: Convert to fraction form
    7,858.16/10,848.89 = 4,875.64/x
  3. Step 3: Cross multiply
    7,858.16x = 10,848.89 × 4,875.64
  4. Step 4: Simplify right side
    7,858.16x = 52,895,300.71
  5. Step 5: Solve for x
    x = 52,895,300.71/7,858.16
  6. Step 6: Final answer
    x = 6,731.25

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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.