Home / 1,547.34-2,134.98-917.55

Finding the Fourth Proportional to 1,547.34, 2,134.98 and 917.55

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Solution

The fourth proportional to 1,547.34, 2,134.98 and 917.55 is: 1,266.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,547.34 : 2,134.98 = 917.55 : x
  2. Step 2: Convert to fraction form
    1,547.34/2,134.98 = 917.55/x
  3. Step 3: Cross multiply
    1,547.34x = 2,134.98 × 917.55
  4. Step 4: Simplify right side
    1,547.34x = 1,958,949.00
  5. Step 5: Solve for x
    x = 1,958,949.00/1,547.34
  6. Step 6: Final answer
    x = 1,266.01

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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.