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Finding the Fourth Proportional to 6,657.95, 9,985.05 and 1,977.77

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Solution

The fourth proportional to 6,657.95, 9,985.05 and 1,977.77 is: 2,966.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,657.95 : 9,985.05 = 1,977.77 : x
  2. Step 2: Convert to fraction form
    6,657.95/9,985.05 = 1,977.77/x
  3. Step 3: Cross multiply
    6,657.95x = 9,985.05 × 1,977.77
  4. Step 4: Simplify right side
    6,657.95x = 19,748,082.41
  5. Step 5: Solve for x
    x = 19,748,082.41/6,657.95
  6. Step 6: Final answer
    x = 2,966.09

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Double scale
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Similar ratio
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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.