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Finding the Fourth Proportional to 5,560.32, 7,678.98 and 4,810.68

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Solution

The fourth proportional to 5,560.32, 7,678.98 and 4,810.68 is: 6,643.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,560.32 : 7,678.98 = 4,810.68 : x
  2. Step 2: Convert to fraction form
    5,560.32/7,678.98 = 4,810.68/x
  3. Step 3: Cross multiply
    5,560.32x = 7,678.98 × 4,810.68
  4. Step 4: Simplify right side
    5,560.32x = 36,941,115.51
  5. Step 5: Solve for x
    x = 36,941,115.51/5,560.32
  6. Step 6: Final answer
    x = 6,643.70

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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.