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Finding the Fourth Proportional to 9,705.40, 14,558.10 and 4,521.40

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Solution

The fourth proportional to 9,705.40, 14,558.10 and 4,521.40 is: 6,782.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,705.40 : 14,558.10 = 4,521.40 : x
  2. Step 2: Convert to fraction form
    9,705.40/14,558.10 = 4,521.40/x
  3. Step 3: Cross multiply
    9,705.40x = 14,558.10 × 4,521.40
  4. Step 4: Simplify right side
    9,705.40x = 65,822,993.34
  5. Step 5: Solve for x
    x = 65,822,993.34/9,705.40
  6. Step 6: Final answer
    x = 6,782.10

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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.