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Finding the Fourth Proportional to 5,913.80, 8,870.70 and 5,376.20

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Solution

The fourth proportional to 5,913.80, 8,870.70 and 5,376.20 is: 8,064.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,913.80 : 8,870.70 = 5,376.20 : x
  2. Step 2: Convert to fraction form
    5,913.80/8,870.70 = 5,376.20/x
  3. Step 3: Cross multiply
    5,913.80x = 8,870.70 × 5,376.20
  4. Step 4: Simplify right side
    5,913.80x = 47,690,657.34
  5. Step 5: Solve for x
    x = 47,690,657.34/5,913.80
  6. Step 6: Final answer
    x = 8,064.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.