Home / 1,121.04-1,547.08-701.40

Finding the Fourth Proportional to 1,121.04, 1,547.08 and 701.40

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Solution

The fourth proportional to 1,121.04, 1,547.08 and 701.40 is: 967.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121.04 : 1,547.08 = 701.40 : x
  2. Step 2: Convert to fraction form
    1,121.04/1,547.08 = 701.40/x
  3. Step 3: Cross multiply
    1,121.04x = 1,547.08 × 701.40
  4. Step 4: Simplify right side
    1,121.04x = 1,085,121.91
  5. Step 5: Solve for x
    x = 1,085,121.91/1,121.04
  6. Step 6: Final answer
    x = 967.96

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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.