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Finding the Fourth Proportional to 1,547.41, 2,318.41 and 1,289.06

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Solution

The fourth proportional to 1,547.41, 2,318.41 and 1,289.06 is: 1,931.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.41 : 2,318.41 = 1,289.06 : x
  2. Step 2: Convert to fraction form
    1,547.41/2,318.41 = 1,289.06/x
  3. Step 3: Cross multiply
    1,547.41x = 2,318.41 × 1,289.06
  4. Step 4: Simplify right side
    1,547.41x = 2,988,572.17
  5. Step 5: Solve for x
    x = 2,988,572.17/1,547.41
  6. Step 6: Final answer
    x = 1,931.34

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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.