Home / 8,316.75-11,457.02-7,117.89

Finding the Fourth Proportional to 8,316.75, 11,457.02 and 7,117.89

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Solution

The fourth proportional to 8,316.75, 11,457.02 and 7,117.89 is: 9,805.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,316.75 : 11,457.02 = 7,117.89 : x
  2. Step 2: Convert to fraction form
    8,316.75/11,457.02 = 7,117.89/x
  3. Step 3: Cross multiply
    8,316.75x = 11,457.02 × 7,117.89
  4. Step 4: Simplify right side
    8,316.75x = 81,549,729.53
  5. Step 5: Solve for x
    x = 81,549,729.53/8,316.75
  6. Step 6: Final answer
    x = 9,805.48

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Find fourth proportional to 4,158.38, 5,728.51 and 3,558.94
Half scale
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Double scale
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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.