Home / 7,113.42-9,816.90-4,130.19

Finding the Fourth Proportional to 7,113.42, 9,816.90 and 4,130.19

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Solution

The fourth proportional to 7,113.42, 9,816.90 and 4,130.19 is: 5,699.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,113.42 : 9,816.90 = 4,130.19 : x
  2. Step 2: Convert to fraction form
    7,113.42/9,816.90 = 4,130.19/x
  3. Step 3: Cross multiply
    7,113.42x = 9,816.90 × 4,130.19
  4. Step 4: Simplify right side
    7,113.42x = 40,545,646.72
  5. Step 5: Solve for x
    x = 40,545,646.72/7,113.42
  6. Step 6: Final answer
    x = 5,699.88

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Half scale
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Double scale
Find fourth proportional to 7,114.42, 9,818.28 and 4,131.19
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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.