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Finding the Fourth Proportional to 8,702.08, 12,011.40 and 5,300.32

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Solution

The fourth proportional to 8,702.08, 12,011.40 and 5,300.32 is: 7,315.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.08 : 12,011.40 = 5,300.32 : x
  2. Step 2: Convert to fraction form
    8,702.08/12,011.40 = 5,300.32/x
  3. Step 3: Cross multiply
    8,702.08x = 12,011.40 × 5,300.32
  4. Step 4: Simplify right side
    8,702.08x = 63,664,263.65
  5. Step 5: Solve for x
    x = 63,664,263.65/8,702.08
  6. Step 6: Final answer
    x = 7,315.98

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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.