Home / 5,386.35-8,079.51-1,688.60

Finding the Fourth Proportional to 5,386.35, 8,079.51 and 1,688.60

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Solution

The fourth proportional to 5,386.35, 8,079.51 and 1,688.60 is: 2,532.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.35 : 8,079.51 = 1,688.60 : x
  2. Step 2: Convert to fraction form
    5,386.35/8,079.51 = 1,688.60/x
  3. Step 3: Cross multiply
    5,386.35x = 8,079.51 × 1,688.60
  4. Step 4: Simplify right side
    5,386.35x = 13,643,020.19
  5. Step 5: Solve for x
    x = 13,643,020.19/5,386.35
  6. Step 6: Final answer
    x = 2,532.89

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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.