Home / 9,136.42-12,607.65-5,157.70

Finding the Fourth Proportional to 9,136.42, 12,607.65 and 5,157.70

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Solution

The fourth proportional to 9,136.42, 12,607.65 and 5,157.70 is: 7,117.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,136.42 : 12,607.65 = 5,157.70 : x
  2. Step 2: Convert to fraction form
    9,136.42/12,607.65 = 5,157.70/x
  3. Step 3: Cross multiply
    9,136.42x = 12,607.65 × 5,157.70
  4. Step 4: Simplify right side
    9,136.42x = 65,026,476.41
  5. Step 5: Solve for x
    x = 65,026,476.41/9,136.42
  6. Step 6: Final answer
    x = 7,117.28

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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.