Home / 8,478.81-11,701.34-4,702.32

Finding the Fourth Proportional to 8,478.81, 11,701.34 and 4,702.32

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Solution

The fourth proportional to 8,478.81, 11,701.34 and 4,702.32 is: 6,489.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.81 : 11,701.34 = 4,702.32 : x
  2. Step 2: Convert to fraction form
    8,478.81/11,701.34 = 4,702.32/x
  3. Step 3: Cross multiply
    8,478.81x = 11,701.34 × 4,702.32
  4. Step 4: Simplify right side
    8,478.81x = 55,023,421.60
  5. Step 5: Solve for x
    x = 55,023,421.60/8,478.81
  6. Step 6: Final answer
    x = 6,489.52

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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.