Home / 5,386.32-8,079.48-1,688.58

Finding the Fourth Proportional to 5,386.32, 8,079.48 and 1,688.58

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Solution

The fourth proportional to 5,386.32, 8,079.48 and 1,688.58 is: 2,532.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,386.32 : 8,079.48 = 1,688.58 : x
  2. Step 2: Convert to fraction form
    5,386.32/8,079.48 = 1,688.58/x
  3. Step 3: Cross multiply
    5,386.32x = 8,079.48 × 1,688.58
  4. Step 4: Simplify right side
    5,386.32x = 13,642,848.34
  5. Step 5: Solve for x
    x = 13,642,848.34/5,386.32
  6. Step 6: Final answer
    x = 2,532.87

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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.