Home / 1,316.20-1,814.94-1,130.32

Finding the Fourth Proportional to 1,316.20, 1,814.94 and 1,130.32

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Solution

The fourth proportional to 1,316.20, 1,814.94 and 1,130.32 is: 1,558.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,316.20 : 1,814.94 = 1,130.32 : x
  2. Step 2: Convert to fraction form
    1,316.20/1,814.94 = 1,130.32/x
  3. Step 3: Cross multiply
    1,316.20x = 1,814.94 × 1,130.32
  4. Step 4: Simplify right side
    1,316.20x = 2,051,462.98
  5. Step 5: Solve for x
    x = 2,051,462.98/1,316.20
  6. Step 6: Final answer
    x = 1,558.63

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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.