Home / 1,534.81-2,312.47-1,388.75

Finding the Fourth Proportional to 1,534.81, 2,312.47 and 1,388.75

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Solution

The fourth proportional to 1,534.81, 2,312.47 and 1,388.75 is: 2,092.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,534.81 : 2,312.47 = 1,388.75 : x
  2. Step 2: Convert to fraction form
    1,534.81/2,312.47 = 1,388.75/x
  3. Step 3: Cross multiply
    1,534.81x = 2,312.47 × 1,388.75
  4. Step 4: Simplify right side
    1,534.81x = 3,211,442.71
  5. Step 5: Solve for x
    x = 3,211,442.71/1,534.81
  6. Step 6: Final answer
    x = 2,092.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.